{"id":151185,"date":"2022-03-21T12:14:56","date_gmt":"2022-03-21T06:44:56","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/avogadro-law-definition-explanation-derivation-example-and-limitations\/"},"modified":"2025-07-24T11:39:08","modified_gmt":"2025-07-24T06:09:08","slug":"avogadro-law-definition-explanation-derivation-example-and-limitations","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/","title":{"rendered":"Avogadro Law \u2013 Definition, Explanation, Derivation, Example and Limitations"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#What_is_Avogadros_Law\" title=\"What is Avogadro&#8217;s Law?\">What is Avogadro&#8217;s Law?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#Avogadros_Law_Formula\" title=\"Avogadro&#8217;s Law Formula\">Avogadro&#8217;s Law Formula<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#Derivation_of_Avogadros_Law\" title=\"Derivation of Avogadro\u2019s Law\">Derivation of Avogadro\u2019s Law<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#Molar_Volume_of_a_Gas\" title=\"Molar Volume of a Gas\">Molar Volume of a Gas<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#Avogadros_Law_Example\" title=\"Avogadro\u2019s Law Example\">Avogadro\u2019s Law Example<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#Limitations_of_Avogadros_Law\" title=\"Limitations of Avogadro\u2019s Law\">Limitations of Avogadro\u2019s Law<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/#Solved_Example_on_Avogadros_Law\" title=\"Solved Example on Avogadro\u2019s Law\">Solved Example on Avogadro\u2019s Law<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Avogadros_Law\"><\/span>What is Avogadro&#8217;s Law?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/infinitylearn.com\/surge\/chemistry\/avogadro-law\/\">Avogadro&#8217;s law<\/a> is a scientific law that states that the number of atoms or molecules in a given sample of a substance is constant, regardless of the size or shape of the sample. This law is named for the Italian scientist Amedeo Avogadro, who first proposed it in 1811.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-151184 size-full\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/avogadro-law-definition-explanation-derivation-example-and-limitations.jpg\" alt=\"Avogadro Law \u2013 Definition, Explanation, Derivation, Example and Limitations\" width=\"606\" height=\"428\" srcset=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/avogadro-law-definition-explanation-derivation-example-and-limitations.jpg?v=1647969024 606w, https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/avogadro-law-definition-explanation-derivation-example-and-limitations-300x212.jpg?v=1647969024 300w\" sizes=\"(max-width: 606px) 100vw, 606px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Avogadros_Law_Formula\"><\/span>Avogadro&#8217;s Law Formula<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Avogadro%27s_law\">Avogadro&#8217;s law<\/a> states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules. This law is named after the Italian scientist Amedeo Avogadro, who proposed it in 1811.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Derivation_of_Avogadros_Law\"><\/span>Derivation of Avogadro\u2019s Law<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Avogadro\u2019s law states that the number of atoms or molecules in a given sample of a gas is the same at any given temperature and pressure. This law is named after Amedeo Avogadro, who first proposed it in 1811.<\/li>\n<li>The law is based on the ideal gas law, which states that the pressure, volume, and temperature of a gas are all related. The ideal gas law can be written in the form PV = nRT, where P is the pressure, V is the volume, n is the number of atoms or molecules, R is the ideal gas constant, and T is the temperature.<\/li>\n<li>The ideal gas law can be rearranged to find the number of atoms or molecules in a given volume of gas. This is done by dividing both sides of the equation by RT. This gives us n = PV\/RT.<\/li>\n<li>If we know the pressure and temperature of a gas, we can use this equation to find the number of atoms or molecules in a given volume of gas.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Molar_Volume_of_a_Gas\"><\/span>Molar Volume of a Gas<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The molar volume of a gas is the volume occupied by one mole of gas particles at standard temperature and pressure. This volume is 22.4 liters.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Avogadros_Law_Example\"><\/span>Avogadro\u2019s Law Example<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>A gas has a volume of 2 liters at a pressure of 1 atm and a temperature of 25\u00b0C.<\/li>\n<li>What is the volume of the gas at a pressure of 2 atm and a temperature of 25\u00b0C?<\/li>\n<li>The volume of the gas at a pressure of 2 atm and a temperature of 25\u00b0C will be 4 liters.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Limitations_of_Avogadros_Law\"><\/span>Limitations of Avogadro\u2019s Law<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Avogadro\u2019s law is a good approximation for gases under most conditions, but it does have some limitations.<\/p>\n<p>1. Avogadro\u2019s law does not apply to liquids or solids.<\/p>\n<p>2. The law is not valid for gases that are very dense or very light.<\/p>\n<p>3. The law is not valid for gases that are very cold or very hot.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Solved_Example_on_Avogadros_Law\"><\/span>Solved Example on Avogadro\u2019s Law<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Question:<\/p>\n<p>A gas occupies a volume of 1.5 liters at a pressure of 1 atmosphere and a temperature of 27 degrees Celsius. What is the volume of the gas at a pressure of 2 atmospheres and a temperature of 27 degrees Celsius?<\/p>\n<p>Solution:<\/p>\n<p>The volume of the gas at a pressure of 2 atmospheres and a temperature of 27 degrees Celsius is 3 liters.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is Avogadro&#8217;s Law? Avogadro&#8217;s law is a scientific law that states that the number of atoms or molecules in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Avogadro Law","_yoast_wpseo_title":"Avogadro Law \u2013 Definition, Derivation, Example and Limitations","_yoast_wpseo_metadesc":"Avogadro's law is scientific law that states that the number of atoms or molecules in given sample of substance is constant at Infinity Learn","custom_permalink":"chemistry\/avogadro-law\/"},"categories":[1],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Avogadro Law \u2013 Definition, Derivation, Example and Limitations<\/title>\n<meta name=\"description\" content=\"Avogadro&#039;s law is scientific law that states that the number of atoms or molecules 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