{"id":7956,"date":"2013-09-07T00:11:18","date_gmt":"2013-09-07T00:11:18","guid":{"rendered":"http:\/\/www.mometrix.com\/academy\/?page_id=7956"},"modified":"2025-11-28T16:04:35","modified_gmt":"2025-11-28T22:04:35","slug":"equilibrium-of-weak-bases","status":"publish","type":"page","link":"https:\/\/www.mometrix.com\/academy\/equilibrium-of-weak-bases\/","title":{"rendered":"Weak Acid Base Equilibrium"},"content":{"rendered":"<h1>Weak Acid Base Equilibrium<\/h1>\n<div class=\"lyte-wrapper fourthree\" title=\"Equilibrium of Weak Bases\" style=\"width:420px;max-width:100%;margin:5px auto;\"><div class=\"lyMe\" id=\"WYL_xGTntRGMOzE\"><div id=\"lyte_xGTntRGMOzE\" data-src=\"https:\/\/www.mometrix.com\/academy\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FxGTntRGMOzE%2Fhqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\">Equilibrium of Weak Bases<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/xGTntRGMOzE\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mometrix.com\/academy\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FxGTntRGMOzE%2F0.jpg\" alt=\"Equilibrium of Weak Bases\" width=\"420\" height=\"295\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:420px;margin:5px auto;\"><\/div>\n<div class=\"accordion\"><input id=\"transcript\" type=\"checkbox\" class=\"spoiler_button\" \/><label for=\"transcript\">Transcript<\/label>\n<div class=\"spoiler\" id=\"transcript-spoiler\">\n<p><strong>Weak bases<\/strong> only partially ionize in aqueous solutions, so they form a system of equilibrium with this general formula right here. Now when we apply the equilibrium expression to this reaction, we&#8217;re going to get this expression right here.<\/p>\n<p>Notice here that I took the right side of this reaction and put it in the numerator of this fraction, and I took the left side of this reaction and put it in the denominator of this fraction. Now you may be thinking we left water out, but we didn&#8217;t because that&#8217;s just excess water, so we don&#8217;t need to take it into account in this reaction.<\/p>\n<p>Now we have this equation right here and this equation is to solve for the base dissociation constant, which looks like this with the capital \\(K\\) and then a lower-case subscript \\(b\\), so the value of \\(K_b\\) indicates the strength of the base. High \\(K_b\\) values indicate strong basis which dissociate readily in water, and low \\(K_b\\) values indicate weak bases which dissociate only a little in water.<\/p>\n<p>By looking just at the \\(K_b\\) values, we can determine which base is stronger. Right here we&#8217;re taking a look at ammonia and pyridine, so the \\(K_b\\) value of ammonia is 1 point 8 times 10 to the negative 5th. Then the \\(K_b\\) value of pyridine is 1 point 7 times 10 to the negative 9. Obviously here, ammonia has a higher \\(K_b\\) value, so we know that ammonia is a stronger base than pyridine, which means that ammonia is going to dissociate more readily in water.<\/p>\n<\/div>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Weak Acid Base Equilibrium<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":{"0":"post-7956","1":"page","2":"type-page","3":"status-publish","5":"page_category-chemistry-acids-and-bases","6":"page_category-chemistry-equilibrium","7":"page_type-video","8":"page_domain-science"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/pages\/7956","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/comments?post=7956"}],"version-history":[{"count":5,"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/pages\/7956\/revisions"}],"predecessor-version":[{"id":279454,"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/pages\/7956\/revisions\/279454"}],"wp:attachment":[{"href":"https:\/\/www.mometrix.com\/academy\/wp-json\/wp\/v2\/media?parent=7956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}