{"id":188726,"date":"2025-02-07T08:43:03","date_gmt":"2025-02-07T08:43:03","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=188726"},"modified":"2025-02-07T08:43:05","modified_gmt":"2025-02-07T08:43:05","slug":"4al-s-3o2-g-2al2o3s","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/07\/4al-s-3o2-g-2al2o3s\/","title":{"rendered":"4Al (s)+ 3O2 (g) ->2Al2O3(s)"},"content":{"rendered":"\n<p>4Al (s)+ 3O2 (g) ->2Al2O3(s)<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>The given chemical reaction is:<\/p>\n\n\n\n<p>[ 4 \\text{Al (s)} + 3 \\text{O}_2 (g) \\rightarrow 2 \\text{Al}_2\\text{O}_3 (s) ]<\/p>\n\n\n\n<p>This represents the reaction between solid aluminum (Al) and oxygen gas (O\u2082) to form solid aluminum oxide (Al\u2082O\u2083). Here\u2019s the breakdown and explanation:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Understand the components<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Aluminum (Al)<\/strong> is a metal, commonly used in various applications due to its lightness, strength, and resistance to corrosion.<\/li>\n\n\n\n<li><strong>Oxygen (O\u2082)<\/strong> is a diatomic molecule that supports combustion and various types of chemical reactions.<\/li>\n\n\n\n<li><strong>Aluminum oxide (Al\u2082O\u2083)<\/strong> is a compound made up of aluminum and oxygen. It is a white, crystalline material and is commonly known as alumina. It forms a thin, protective oxide layer over aluminum metal, helping to protect it from further oxidation.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Stoichiometry of the reaction<\/h3>\n\n\n\n<p>The balanced chemical equation indicates that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>4 moles of aluminum react with 3 moles of oxygen gas.<\/li>\n\n\n\n<li>This produces 2 moles of aluminum oxide.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Reaction details<\/h3>\n\n\n\n<p>This reaction is an example of a <strong>combustion reaction<\/strong> where a metal reacts with oxygen to form an oxide. In this case, aluminum reacts with the oxygen in the air to form aluminum oxide. This process releases a significant amount of energy, often in the form of heat and light, and is commonly seen in the thermite reaction, where aluminum powder reacts with iron oxide (Fe\u2082O\u2083) to produce aluminum oxide and molten iron.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Importance and applications<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Aluminum oxide (Al\u2082O\u2083)<\/strong> is used in various industries, including ceramics, as an abrasive, and as a material for producing aluminum metal through the Hall-H\u00e9roult process.<\/li>\n\n\n\n<li>The formation of an oxide layer on aluminum is what gives aluminum its resistance to corrosion, especially in outdoor environments.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Conclusion<\/h3>\n\n\n\n<p>This reaction showcases the combination of a metal (Al) with a non-metal (O\u2082) to form a simple ionic compound (Al\u2082O\u2083). It illustrates the principle of balancing chemical equations to ensure that atoms are conserved on both sides of the reaction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>4Al (s)+ 3O2 (g) ->2Al2O3(s) The Correct Answer and Explanation is : The given chemical reaction is: [ 4 \\text{Al (s)} + 3 \\text{O}_2 (g) \\rightarrow 2 \\text{Al}_2\\text{O}_3 (s) ] This represents the reaction between solid aluminum (Al) and oxygen gas (O\u2082) to form solid aluminum oxide (Al\u2082O\u2083). Here\u2019s the breakdown and explanation: Step 1: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-188726","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/188726","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=188726"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/188726\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=188726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=188726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=188726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}