{"id":25992,"date":"2025-06-19T08:59:46","date_gmt":"2025-06-19T08:59:46","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=25992"},"modified":"2025-06-19T08:59:47","modified_gmt":"2025-06-19T08:59:47","slug":"cacl2aq-nh42co3aq-%e2%86%92-caco3s-2nh4claq","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/cacl2aq-nh42co3aq-%e2%86%92-caco3s-2nh4claq\/","title":{"rendered":"CaCl2(aq) + (NH4)2CO3(aq) \u2192 CaCO3(s) + 2NH4Cl(aq"},"content":{"rendered":"\n<p>CaCl2(aq) + (NH4)2CO3(aq) \u2192 CaCO3(s) + 2NH4Cl(aq<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-light-green-cyan-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Balanced Chemical Equation:<\/strong><\/p>\n\n\n\n<p>CaCl\u2082(aq) + (NH\u2084)\u2082CO\u2083(aq) \u2192 CaCO\u2083(s) + 2NH\u2084Cl(aq)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Explanation <\/strong><\/p>\n\n\n\n<p>This is a classic example of a <strong>double displacement reaction<\/strong>, also known as a <strong>precipitation reaction<\/strong> because a solid (precipitate) forms from the mixing of two aqueous solutions.<\/p>\n\n\n\n<p>Let us begin by understanding the chemical components:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CaCl\u2082<\/strong> is <strong>calcium chloride<\/strong>, a soluble ionic compound that dissociates into <strong>Ca\u00b2\u207a<\/strong> and <strong>Cl\u207b<\/strong> ions in water.<\/li>\n\n\n\n<li><strong>(NH\u2084)\u2082CO\u2083<\/strong> is <strong>ammonium carbonate<\/strong>, another soluble ionic compound that dissociates into <strong>NH\u2084\u207a<\/strong> and <strong>CO\u2083\u00b2\u207b<\/strong> ions.<\/li>\n\n\n\n<li>When these two solutions are mixed, the calcium ions (Ca\u00b2\u207a) from calcium chloride react with the carbonate ions (CO\u2083\u00b2\u207b) from ammonium carbonate to form <strong>calcium carbonate (CaCO\u2083)<\/strong>, which is an <strong>insoluble<\/strong> compound. Therefore, it precipitates out of solution as a solid.<\/li>\n\n\n\n<li>The remaining ions, <strong>NH\u2084\u207a<\/strong> and <strong>Cl\u207b<\/strong>, stay dissolved in water and form <strong>ammonium chloride (NH\u2084Cl)<\/strong>, which remains in the aqueous phase.<\/li>\n<\/ul>\n\n\n\n<p>Now let us confirm that the equation is balanced:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>On the left side, we have:\n<ul class=\"wp-block-list\">\n<li>1 calcium atom<\/li>\n\n\n\n<li>2 chlorine atoms<\/li>\n\n\n\n<li>2 ammonium (NH\u2084\u207a) ions<\/li>\n\n\n\n<li>1 carbonate ion<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>On the right side, we have:\n<ul class=\"wp-block-list\">\n<li>1 calcium atom in calcium carbonate<\/li>\n\n\n\n<li>1 carbonate ion in calcium carbonate<\/li>\n\n\n\n<li>2 ammonium ions in 2 NH\u2084Cl<\/li>\n\n\n\n<li>2 chlorine atoms in 2 NH\u2084Cl<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>Thus, the number of each type of atom is equal on both sides, meaning the equation is balanced correctly.<\/p>\n\n\n\n<p>In summary, this chemical reaction demonstrates how ionic compounds in solution can exchange ions and form a precipitate. The formation of calcium carbonate solid is the key observable evidence of the reaction taking place.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"722\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner10-33.jpeg\" alt=\"\" class=\"wp-image-25993\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner10-33.jpeg 722w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner10-33-212x300.jpeg 212w\" sizes=\"auto, (max-width: 722px) 100vw, 722px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>CaCl2(aq) + (NH4)2CO3(aq) \u2192 CaCO3(s) + 2NH4Cl(aq The Correct Answer and Explanation is: Balanced Chemical Equation: CaCl\u2082(aq) + (NH\u2084)\u2082CO\u2083(aq) \u2192 CaCO\u2083(s) + 2NH\u2084Cl(aq) Explanation This is a classic example of a double displacement reaction, also known as a precipitation reaction because a solid (precipitate) forms from the mixing of two aqueous solutions. Let us begin [&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-25992","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25992","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=25992"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25992\/revisions"}],"predecessor-version":[{"id":25994,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25992\/revisions\/25994"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=25992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=25992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=25992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}