Which of the following is a correct set of oxidation numbers for the atoms in calcium dihydrogen phosphate, Ca(H2PO4)2?<\/p>\n\n\n\n
A. Ca= +2, H=+1, P=+5, O= -2
B. Ca= +2, H=0, P=+7, O= -8
C. Ca= +2, H= -1, P=+4, O= -2
D. Ca^2+= +2, H2PO4- = -1
E. Ca = +2, H = +1, P=+3, O= -2<\/p>\n\n\n\n
The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n Let’s work through this carefully.<\/p>\n\n\n\n Correct Answer:<\/strong> Detailed Explanation (300+ words):<\/strong><\/p>\n\n\n\n First, let’s understand what we are dealing with. The chemical formula given is Ca(H\u2082PO\u2084)\u2082<\/strong> \u2014 calcium dihydrogen phosphate. This compound contains a calcium ion (Ca\u00b2\u207a<\/strong>) and two dihydrogen phosphate ions (H\u2082PO\u2084\u207b<\/strong>).<\/p>\n\n\n\n When finding oxidation numbers:<\/p>\n\n\n\n Now, we need to find the oxidation number of phosphorus (P)<\/strong> in H\u2082PO\u2084\u207b<\/strong>.<\/p>\n\n\n\n Set up an equation for the total charge of one dihydrogen phosphate ion (H\u2082PO\u2084\u207b<\/strong>):<\/p>\n\n\n\n [ Substituting known values:<\/p>\n\n\n\n [ Thus, in the H\u2082PO\u2084\u207b<\/strong> ion:<\/p>\n\n\n\n Putting it all together for Ca(H\u2082PO\u2084)\u2082<\/strong>:<\/p>\n\n\n\n Thus, choice A<\/strong> is the correct set of oxidation numbers.<\/p>\n\n\n\n Why the others are incorrect:<\/strong><\/p>\n\n\n\n Which of the following is a correct set of oxidation numbers for the atoms in calcium dihydrogen phosphate, Ca(H2PO4)2? A. Ca= +2, H=+1, P=+5, O= -2B. Ca= +2, H=0, P=+7, O= -8C. Ca= +2, H= -1, P=+4, O= -2D. Ca^2+= +2, H2PO4- = -1E. Ca = +2, H = +1, P=+3, O= -2 The correct […]<\/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-208281","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/208281","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=208281"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/208281\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=208281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=208281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=208281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\u2705 A. Ca = +2, H = +1, P = +5, O = -2<\/strong><\/p>\n\n\n\n
\n\n\n\n\n
2(\\text{oxidation number of H}) + 1(\\text{oxidation number of P}) + 4(\\text{oxidation number of O}) = -1
]<\/p>\n\n\n\n
2(+1) + (P) + 4(-2) = -1
]
[
2 + P – 8 = -1
]
[
P – 6 = -1
]
[
P = +5
]<\/p>\n\n\n\n\n
\n
\n\n\n\n\n
\n","protected":false},"excerpt":{"rendered":"