{"id":173,"date":"2026-10-03T17:23:50","date_gmt":"2026-10-03T16:23:50","guid":{"rendered":"https:\/\/wpcalc.com\/pt\/lei-de-charles\/"},"modified":"2026-10-03T17:23:50","modified_gmt":"2026-10-03T16:23:50","slug":"lei-de-charles","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/pt\/quimica\/lei-de-charles\/","title":{"rendered":"Calculadora da Lei de Charles"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Resolver Problemas da Lei de Charles<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"173\" data-favorite-title=\"Lei de Charles\" data-favorite-url=\"https:\/\/wpcalc.com\/pt\/quimica\/lei-de-charles\/\" data-favorite-excerpt=\"Calcule o volume ou a temperatura inicial ou final de um g\u00e1s usando a lei de Charles. Selecione o valor a encontrar e introduza os restantes valores sob press\u00e3o constante.\" aria-label=\"Adicionar aos favoritos\" data-favorite-icon=\"icon icon-wind-2\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/pt\/quimica\/lei-de-charles\/\" method=\"POST\" class=\"calculator\" id=\"calculator-173\" data-post=\"173\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Campos de entrada<\/legend><div class=\"field is-single\" id=\"input-1\"><label for=\"field-1\">Quero calcular<\/label><div class=\"grid grid-cols-1\"><select id=\"field-1\" name=\"quero_calcular\"><option value=\"v2\">Volume final (V\u2082)<\/option><option value=\"v1\">Volume inicial (V\u2081)<\/option><option value=\"t1\">Temperatura inicial (T\u2081)<\/option><option value=\"t2\">Temperatura final (T\u2082)<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><div class=\"field\" id=\"input-2\"><label for=\"field-2\">Volume inicial (V\u2081)<\/label><div class=\"field-group\"><input type=\"number\" name=\"volume_inicial_v\" id=\"field-2\" step=\"any\" value=\"1\"\/><div class=\"grid grid-cols-1\"><select id=\"field-3\" name=\"unidade\" aria-label=\"Unidade\"><option value=\"l\">L<\/option><option value=\"ml\">mL<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><\/div><div class=\"field\" id=\"input-3\"><label for=\"field-4\">Temperatura inicial (T\u2081)<\/label><input type=\"number\" name=\"temperatura_inicial_t\" id=\"field-4\" aria-describedby=\"calc-unit-4\" step=\"any\" value=\"273\"\/><div class=\"unit\" id=\"calc-unit-4\">K<\/div><\/div><div class=\"field\" id=\"input-4\" hidden><label for=\"field-5\">Volume final (V\u2082)<\/label><div class=\"field-group\"><input type=\"number\" name=\"volume_final_v\" id=\"field-5\" step=\"any\" value=\"2\"\/><div class=\"grid grid-cols-1\"><select id=\"field-6\" name=\"unidade\" aria-label=\"Unidade\"><option value=\"l\">L<\/option><option value=\"ml\">mL<\/option><\/select><svg class=\"pointer-events-none col-start-1 row-start-1 mr-2 size-5 self-center justify-self-end text-gray-500 sm:size-4\" viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\" data-slot=\"icon\">\n              <path fill-rule=\"evenodd\" d=\"M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z\" clip-rule=\"evenodd\" \/>\n            <\/svg><\/div><\/div><\/div><div class=\"field\" id=\"input-5\"><label for=\"field-7\">Temperatura final (T\u2082)<\/label><input type=\"number\" name=\"temperatura_final_t\" id=\"field-7\" aria-describedby=\"calc-unit-7\" step=\"any\" value=\"293\"\/><div class=\"unit\" id=\"calc-unit-7\">K<\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Recalcular\" id=\"calculate-button\" data-post=\"173\">Calcular<\/button><button type=\"reset\">Redefinir<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calcular automaticamente<\/label><small>Se ativado, o resultado \u00e9 atualizado automaticamente quando voc\u00ea altera qualquer valor.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Seus resultados<\/h3><div class=\"result-box\"><div class=\"field-result is-column is-grid\" id=\"output-1\"><span class=\"field-value\" id=\"result-1\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copiar resultado\" aria-label=\"Copiar resultado\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copiar link para este c\u00e1lculo<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Deixar um coment\u00e1rio<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"173\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">O que voc\u00ea achou deste resultado?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Curti <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">\u00datil <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confuso <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Decepcionado <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Impreciso <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>F\u00f3rmula da Lei de Charles<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">F\u00f3rmula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[\\frac{V_1}{T_1}=\\frac{V_2}{T_2}\\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Onde:<\/strong><\/p>\n<ul>\n<li>\\(V_1\\) \u2014 volume inicial do g\u00e1s (L ou mL)<\/li>\n<li>\\(V_2\\) \u2014 volume final do g\u00e1s (L ou mL)<\/li>\n<li>\\(T_1\\) \u2014 temperatura inicial (K)<\/li>\n<li>\\(T_2\\) \u2014 temperatura final (K)<\/li>\n<\/ul>\n<p>Com press\u00e3o constante e quantidade fixa de g\u00e1s, o volume \u00e9 diretamente proporcional \u00e0 temperatura absoluta. Use a mesma unidade de volume para \\(V_1\\) e \\(V_2\\), e expresse ambas as temperaturas em kelvin.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-2\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Lei de Charles \u2013 Exemplo de C\u00e1lculo<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Exemplo:<\/strong> Um g\u00e1s ocupa 1 L a 273 K. Se aquecer at\u00e9 293 K enquanto a sua press\u00e3o se mant\u00e9m constante, qual \u00e9 o seu volume final?<\/p>\n<p>\\[V_2=V_1\\frac{T_2}{T_1}=1\\,\\text{L}\\times\\frac{293\\,\\text{K}}{273\\,\\text{K}}\\approx1.0733\\,\\text{L}\\]<\/p>\n<p><strong>Resultado:<\/strong> O volume final \u00e9 aproximadamente 1,0733 L, coincidindo com o resultado da calculadora a quatro casas decimais.<\/p>\n<p>\n\r\n<\/section>\n<h2>Como usar a calculadora<\/h2>\n<ol>\n<li>Em <strong>Quero calcular<\/strong>, escolha <strong>Volume Final (V\u2082)<\/strong>, <strong>Volume Inicial (V\u2081)<\/strong>, <strong>Temperatura Inicial (T\u2081)<\/strong> ou <strong>Temperatura Final (T\u2082)<\/strong>. O campo da inc\u00f3gnita selecionada fica oculto.<\/li>\n<li>Introduza os valores conhecidos nos campos vis\u00edveis: <strong>Volume Inicial (V\u2081)<\/strong>, <strong>Temperatura Inicial (T\u2081)<\/strong>, <strong>Volume Final (V\u2082)<\/strong> ou <strong>Temperatura Final (T\u2082)<\/strong>, conforme aplic\u00e1vel.<\/li>\n<li>Introduza as temperaturas em <strong>K<\/strong>. Para um c\u00e1lculo de volume, escolha <strong>L<\/strong> ou <strong>mL<\/strong> ao lado do volume conhecido. Para um c\u00e1lculo de temperatura, introduza ambos os volumes na mesma unidade.<\/li>\n<li>Leia o valor calculado abaixo dos campos. Os resultados de volume usam a unidade selecionada para o volume conhecido; os resultados de temperatura s\u00e3o expressos em kelvin.<\/li>\n<\/ol>\n<h2>O que significa a lei de Charles<\/h2>\n<p>A lei de Charles descreve como o volume de uma quantidade fixa de g\u00e1s varia com a temperatura quando a press\u00e3o se mant\u00e9m constante. \u00c0 medida que o g\u00e1s aquece, ocupa mais espa\u00e7o; \u00e0 medida que arrefece, ocupa menos. A equa\u00e7\u00e3o compara dois estados do mesmo g\u00e1s, pelo que funciona nos dois sentidos: pode calcular um volume a partir de duas temperaturas ou uma temperatura a partir de dois volumes.<\/p>\n<p>O essencial \u00e9 a temperatura <em>absoluta<\/em>. O kelvin come\u00e7a no zero absoluto, o que torna significativas as raz\u00f5es de temperatura na equa\u00e7\u00e3o. Por exemplo, elevar a temperatura de 200 K para 300 K multiplica-a por 1,5. Se a press\u00e3o e a quantidade de g\u00e1s se mantiverem inalteradas, o volume previsto tamb\u00e9m \u00e9 multiplicado por 1,5. Uma varia\u00e7\u00e3o de 100 \u00b0C n\u00e3o especifica, por si s\u00f3, uma raz\u00e3o de volumes; a temperatura inicial \u00e9 relevante.<\/p>\n<p>O resultado \u00e9 um valor previsto nas condi\u00e7\u00f5es indicadas, n\u00e3o uma garantia de que todo o recipiente expandir\u00e1. Um recipiente r\u00edgido e fechado n\u00e3o pode aumentar o seu volume quando o g\u00e1s aquece; em vez disso, a sua press\u00e3o muda. Se a press\u00e3o mudar entre os dois estados, utilize a <a href=\"https:\/\/wpcalc.com\/pt\/quimica\/lei-combinada-dos-gases\/\">Calculadora da Lei Combinada dos Gases<\/a>. Se a temperatura se mantiver constante e precisar da rela\u00e7\u00e3o entre press\u00e3o e volume, consulte a <a href=\"https:\/\/wpcalc.com\/pt\/quimica\/lei-de-boyle\/\">Calculadora da Lei de Boyle<\/a>.<\/p>\n<h2>Pressupostos e dicas pr\u00e1ticas<\/h2>\n<ul>\n<li><strong>Mantenha constantes a press\u00e3o e a quantidade de g\u00e1s.<\/strong> O c\u00e1lculo pressup\u00f5e que o g\u00e1s pode expandir-se ou contrair-se livremente o suficiente para manter a mesma press\u00e3o e que nada \u00e9 adicionado nem perdido. Se alguma destas condi\u00e7\u00f5es mudar, a lei de Charles por si s\u00f3 \u00e9 insuficiente.<\/li>\n<li><strong>Converta as temperaturas antes de as introduzir.<\/strong> Use \\(T(\\text{K})=T(^{\\circ}\\text{C})+273.15\\). Por exemplo, 20 \u00b0C correspondem a 293,15 K. O exemplo acima usa deliberadamente os valores predefinidos da calculadora, 273 K e 293 K, em vez de convers\u00f5es arredondadas de Celsius.<\/li>\n<li><strong>Mantenha as unidades de volume consistentes.<\/strong> Para calcular uma temperatura, ambos os volumes devem estar em L ou ambos em mL; a calculadora n\u00e3o converte um campo de volume para o tornar igual ao outro. Para calcular um volume, o resultado usa a unidade selecionada para o volume conhecido.<\/li>\n<li><strong>Use valores positivos.<\/strong> As temperaturas devem ser superiores a 0 K e os volumes maiores que zero para um c\u00e1lculo com significado. Um valor zero num denominador tamb\u00e9m torna indefinida a respetiva equa\u00e7\u00e3o reorganizada.<\/li>\n<li><strong>Considere as condi\u00e7\u00f5es f\u00edsicas.<\/strong> A rela\u00e7\u00e3o aproxima-se melhor do comportamento dos gases reais quando o g\u00e1s permanece no estado gasoso e se comporta pr\u00f3ximo de um g\u00e1s ideal. A condensa\u00e7\u00e3o, press\u00f5es muito elevadas ou temperaturas pr\u00f3ximas do zero absoluto podem tornar a previs\u00e3o pouco fi\u00e1vel. Para c\u00e1lculos que envolvam press\u00e3o, volume, temperatura e quantidade de g\u00e1s, utilize a <a href=\"https:\/\/wpcalc.com\/pt\/quimica\/lei-dos-gases-ideais\/\">Calculadora da Lei dos Gases Ideais<\/a>.<\/li>\n<\/ul>\n<h2>Calcular outro valor<\/h2>\n<p>A calculadora reorganiza a mesma equa\u00e7\u00e3o para o valor selecionado em <strong>Quero calcular<\/strong>. Para o volume final, usa \\(V_2=V_1T_2\/T_1\\); para o volume inicial, \\(V_1=V_2T_1\/T_2\\). Para a temperatura inicial, usa \\(T_1=T_2V_1\/V_2\\); para a temperatura final, \\(T_2=T_1V_2\/V_1\\). Cada forma exprime a mesma rela\u00e7\u00e3o de proporcionalidade, pelo que os pressupostos sobre press\u00e3o constante, quantidade fixa de g\u00e1s e unidades consistentes se aplicam a todos os resultados.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calcule o volume ou a temperatura inicial ou final de um g\u00e1s usando a lei de Charles. Selecione o valor a encontrar e introduza os restantes valores sob press\u00e3o constante.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[41],"class_list":["post-173","post","type-post","status-publish","format-standard","hentry","category-quimica","tag-gases"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts\/173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/comments?post=173"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts\/173\/revisions"}],"predecessor-version":[{"id":2606,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/posts\/173\/revisions\/2606"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/media?parent=173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/categories?post=173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/pt\/wp-json\/wp\/v2\/tags?post=173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}