{"id":221548,"date":"2025-05-29T18:57:49","date_gmt":"2025-05-29T18:57:49","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=221548"},"modified":"2025-05-29T18:57:51","modified_gmt":"2025-05-29T18:57:51","slug":"which-of-the-following-chemical-equations-describes-a-dehydration-reaction","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/29\/which-of-the-following-chemical-equations-describes-a-dehydration-reaction\/","title":{"rendered":"Which Of The Following Chemical Equations Describes A Dehydration Reaction"},"content":{"rendered":"\n<p>Which Of The Following Chemical Equations Describes A Dehydration Reaction? Select One:<\/p>\n\n\n\n<p>A. Monosaccharide + Monosaccharide + H2O = Disaccharide<br>B. Disaccharide = Monosaccharide + Monosaccharide + H2O<br>C. Disaccharide + H2O = Monosaccharide + Monosaccharide<br>D. Monosaccharide + Monosaccharide = Disaccharide + H2O<br>Which of the following chemical equations describes a dehydration reaction? Select one: O A. monosaccharide + monosaccharide<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answer is:<\/p>\n\n\n\n<p><strong>D. Monosaccharide + Monosaccharide = Disaccharide + H\u2082O<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>A <strong>dehydration reaction<\/strong>, also known as a <strong>condensation reaction<\/strong>, is a chemical process in which two molecules are covalently bonded to each other with the removal of a water molecule (H\u2082O). This type of reaction is especially important in <strong>biological systems<\/strong>, such as the synthesis of carbohydrates, proteins, and nucleic acids.<\/p>\n\n\n\n<p>In the context of carbohydrates, <strong>monosaccharides<\/strong> (simple sugars like glucose or fructose) can join together to form <strong>disaccharides<\/strong> (such as sucrose or lactose) through dehydration reactions. During this process, a hydroxyl group (-OH) from one monosaccharide and a hydrogen atom (H) from another are removed, releasing a water molecule (H\u2082O). The remaining oxygen atom forms a <strong>glycosidic bond<\/strong> between the two sugar molecules, resulting in a disaccharide.<\/p>\n\n\n\n<p>Let\u2019s analyze the given choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A. Monosaccharide + Monosaccharide + H\u2082O = Disaccharide<\/strong><br>\u2192 Incorrect. This incorrectly includes water as a reactant, whereas it should be a product in a dehydration reaction.<\/li>\n\n\n\n<li><strong>B. Disaccharide = Monosaccharide + Monosaccharide + H\u2082O<\/strong><br>\u2192 Incorrect. This describes a <strong>hydrolysis reaction<\/strong>, the reverse of dehydration, where water is used to break a disaccharide into two monosaccharides.<\/li>\n\n\n\n<li><strong>C. Disaccharide + H\u2082O = Monosaccharide + Monosaccharide<\/strong><br>\u2192 Incorrect. This is also a <strong>hydrolysis reaction<\/strong>, not a dehydration reaction.<\/li>\n\n\n\n<li><strong>D. Monosaccharide + Monosaccharide = Disaccharide + H\u2082O<\/strong><br>\u2192 <strong>Correct.<\/strong> This correctly represents a <strong>dehydration reaction<\/strong>, where two monosaccharides combine and release a molecule of water.<\/li>\n<\/ul>\n\n\n\n<p>Thus, <strong>option D<\/strong> correctly describes a dehydration reaction, a fundamental process in forming complex biomolecules.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/05\/learnexams-banner7-105.jpeg\" alt=\"\" class=\"wp-image-221549\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Which Of The Following Chemical Equations Describes A Dehydration Reaction? Select One: A. Monosaccharide + Monosaccharide + H2O = DisaccharideB. Disaccharide = Monosaccharide + Monosaccharide + H2OC. Disaccharide + H2O = Monosaccharide + MonosaccharideD. Monosaccharide + Monosaccharide = Disaccharide + H2OWhich of the following chemical equations describes a dehydration reaction? Select one: O A. monosaccharide [&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-221548","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/221548","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=221548"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/221548\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=221548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=221548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=221548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}