{"id":194412,"date":"2025-02-24T05:46:16","date_gmt":"2025-02-24T05:46:16","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=194412"},"modified":"2025-02-24T05:46:18","modified_gmt":"2025-02-24T05:46:18","slug":"magnesium-metal-reacts-with-hydrochloric-acid-to-produce-magnesium-chloride-plus-hydrogen-gas-h2-6","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/24\/magnesium-metal-reacts-with-hydrochloric-acid-to-produce-magnesium-chloride-plus-hydrogen-gas-h2-6\/","title":{"rendered":"Magnesium metal reacts with hydrochloric acid to produce magnesium chloride plus hydrogen gas (H2) 6"},"content":{"rendered":"\n<p>Magnesium metal reacts with hydrochloric acid to produce magnesium chloride plus hydrogen gas (H2) 6. <\/p>\n\n\n\n<p>a) Write a balanced chemical equation for this process.<\/p>\n\n\n\n<p>b) If 55 mg of magnesium are reacted with 18 mL of a 0.20 M HCl solution, what is the limiting reactant?<\/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<h3 class=\"wp-block-heading\">(a) Balanced Chemical Equation:<\/h3>\n\n\n\n<p>[<br>\\text{Mg} (s) + 2\\text{HCl} (aq) \\rightarrow \\text{MgCl}_2 (aq) + \\text{H}_2 (g)<br>]<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(b) Identifying the Limiting Reactant:<\/h3>\n\n\n\n<p>To determine the limiting reactant, we need to compare the moles of magnesium (Mg) and hydrochloric acid (HCl) available.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 1: Calculate Moles of Magnesium<\/strong><\/h4>\n\n\n\n<p>The molar mass of magnesium (Mg) is <strong>24.31 g\/mol<\/strong>.<\/p>\n\n\n\n<p>[<br>\\text{Moles of Mg} = \\frac{55 \\text{ mg}}{24.31 \\text{ g\/mol}} = \\frac{0.055 \\text{ g}}{24.31 \\text{ g\/mol}} \\approx 0.00226 \\text{ moles}<br>]<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 2: Calculate Moles of HCl<\/strong><\/h4>\n\n\n\n<p>The molarity equation:<\/p>\n\n\n\n<p>[<br>\\text{Moles} = \\text{Molarity} \\times \\text{Volume (L)}<br>]<\/p>\n\n\n\n<p>Given <strong>0.20 M HCl<\/strong> and <strong>18 mL (0.018 L)<\/strong>:<\/p>\n\n\n\n<p>[<br>\\text{Moles of HCl} = 0.20 \\times 0.018 = 0.0036 \\text{ moles}<br>]<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 3: Determine Limiting Reactant<\/strong><\/h4>\n\n\n\n<p>From the balanced equation, <strong>1 mole of Mg<\/strong> reacts with <strong>2 moles of HCl<\/strong>.<\/p>\n\n\n\n<p>[<br>\\text{Moles of HCl required} = 0.00226 \\times 2 = 0.00452 \\text{ moles}<br>]<\/p>\n\n\n\n<p>Since only <strong>0.0036 moles<\/strong> of HCl are available (less than <strong>0.00452 moles<\/strong> needed), <strong>HCl is the limiting reactant<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation<\/strong><\/h3>\n\n\n\n<p>In a chemical reaction, the limiting reactant is the one that gets completely consumed first, thus determining the maximum amount of product formed. Here, <strong>HCl is the limiting reactant<\/strong> because there is not enough of it to completely react with all the magnesium present. Even though there are 0.00226 moles of Mg available, there are only <strong>0.0036 moles of HCl<\/strong>, which is <strong>less than the 0.00452 moles required<\/strong>. Because of this, HCl will be used up first, preventing further reaction. Consequently, the reaction will stop once all HCl is consumed, making it the <strong>limiting reactant<\/strong>.<\/p>\n\n\n\n<p>Now, I will generate an image illustrating this reaction.<\/p>\n\n\n\n<p>I&#8217;ve provided an illustration of the reaction between magnesium metal and hydrochloric acid, showing the production of magnesium chloride and hydrogen gas. Let me know if you need any modifications!<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/02\/image-1318.png\" alt=\"\" class=\"wp-image-194413\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Magnesium metal reacts with hydrochloric acid to produce magnesium chloride plus hydrogen gas (H2) 6. a) Write a balanced chemical equation for this process. b) If 55 mg of magnesium are reacted with 18 mL of a 0.20 M HCl solution, what is the limiting reactant? The Correct Answer and Explanation is : (a) Balanced [&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-194412","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/194412","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=194412"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/194412\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=194412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=194412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=194412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}