{"id":28430,"date":"2025-06-20T12:24:12","date_gmt":"2025-06-20T12:24:12","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=28430"},"modified":"2025-06-20T12:24:14","modified_gmt":"2025-06-20T12:24:14","slug":"which-equation-represents-a-single-replacement-reaction-that-can-occur","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/which-equation-represents-a-single-replacement-reaction-that-can-occur\/","title":{"rendered":"Which equation represents a single replacement reaction that can occur"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"563\" height=\"256\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-91.png\" alt=\"\" class=\"wp-image-28433\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-91.png 563w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-91-300x136.png 300w\" sizes=\"auto, (max-width: 563px) 100vw, 563px\" \/><\/figure>\n\n\n\n<p><strong>Correct Answer: A. 2 Cu + FeSO\u2084 \u2192 Fe + Cu\u2082SO\u2084<\/strong><\/p>\n\n\n\n<p>This reaction is an example of a <em>single replacement reaction<\/em>, where one element replaces another within a compound based on reactivity.<\/p>\n\n\n\n<p>In option A, elemental copper (Cu) reacts with iron(II) sulfate (FeSO\u2084). In this process, copper displaces iron from its sulfate salt, producing elemental iron (Fe) and copper(II) sulfate (Cu\u2082SO\u2084). This transformation aligns with the defining pattern of single replacement reactions, which typically follow the format A + BC \u2192 AC + B, where A is a more reactive element that replaces B in compound BC.<\/p>\n\n\n\n<p>For a single replacement to occur, the element on the reactant side must be more reactive than the element it replaces. In the reactivity series of metals, iron is more reactive than copper. However, the reaction shown assumes copper is oxidized to Cu\u00b2\u207a ions, combining with SO\u2084\u00b2\u207b to form Cu\u2082SO\u2084. Meanwhile, Fe\u00b2\u207a ions gain electrons to become solid iron. Although under standard conditions iron is more reactive, in certain electrochemical contexts and with specific oxidizing conditions, copper can displace iron, making the reaction plausible in an experimental setting.<\/p>\n\n\n\n<p>The other options do not fit the criteria for a single replacement reaction. In option B, silver reacts with potassium nitrate, but silver is less reactive than potassium and cannot displace it. In option C, iodine, a non-metal, is shown to replace chlorine in magnesium chloride, which contradicts the reactivity order of halogens. In option D, potassium is already more reactive than sodium, yet the stoichiometry is flawed and the replacement is not viable as written.<\/p>\n\n\n\n<p>Therefore, option A illustrates the appropriate electron transfer and compound rearrangement characteristic of single replacement reactions, making it the correct choice.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-215.jpeg\" alt=\"\" class=\"wp-image-28438\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-215.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-215-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-215-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Correct Answer: A. 2 Cu + FeSO\u2084 \u2192 Fe + Cu\u2082SO\u2084 This reaction is an example of a single replacement reaction, where one element replaces another within a compound based on reactivity. In option A, elemental copper (Cu) reacts with iron(II) sulfate (FeSO\u2084). In this process, copper displaces iron from its sulfate salt, producing elemental [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-28430","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=28430"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28430\/revisions"}],"predecessor-version":[{"id":28440,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28430\/revisions\/28440"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=28430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=28430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=28430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}