The molar mass of ammonium phosphate, ((NH_4)_3PO_4), can be calculated by adding the molar masses of all the atoms in the formula.<\/p>\n\n\n\n
- \n
- Ammonium ion<\/strong> ((NH_4^+)): The molar mass of nitrogen (N) is approximately 14.01 g\/mol, and the molar mass of hydrogen (H) is approximately 1.008 g\/mol. The ammonium ion has one nitrogen atom and four hydrogen atoms, so:
[
\\text{Molar mass of } NH_4^+ = (1 \\times 14.01) + (4 \\times 1.008) = 14.01 + 4.032 = 18.042 \\, \\text{g\/mol}.
]<\/li>\n\n\n\n- Phosphate ion<\/strong> ((PO_4^{3-})): The molar mass of phosphorus (P) is approximately 30.97 g\/mol, and the molar mass of oxygen (O) is approximately 16.00 g\/mol. The phosphate ion consists of one phosphorus atom and four oxygen atoms, so:
[
\\text{Molar mass of } PO_4^{3-} = (1 \\times 30.97) + (4 \\times 16.00) = 30.97 + 64.00 = 94.97 \\, \\text{g\/mol}.
]<\/li>\n\n\n\n- Calculating the molar mass of ((NH_4)_3PO_4)<\/strong>: There are three ammonium ions, so the contribution from ammonium is:
[
3 \\times 18.042 = 54.126 \\, \\text{g\/mol}.
]
The total molar mass of ammonium phosphate is then the sum of the contributions from the ammonium ions and the phosphate ion:
[
54.126 \\, \\text{g\/mol} + 94.97 \\, \\text{g\/mol} = 149.096 \\, \\text{g\/mol}.
]<\/li>\n<\/ol>\n\n\n\nTherefore, the molar mass of ammonium phosphate ((NH_4)_3PO_4) is approximately 149.0 g\/mol<\/strong>, and the correct answer is 149.0 g\/mol<\/strong>.<\/p>\n\n\n\n
Let me also generate an image to visualize this explanation.<\/p>\n\n\n\n
Here’s the diagram showing the molar mass calculation for ammonium phosphate ((NH_4)_3PO_4). It visualizes the individual components and the final molar mass of 149.0 g\/mol<\/strong>. Let me know if you need any further clarifications!<\/p>\n\n\n\n
![\"\"](\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/02\/image-844.png\")
<\/figure>\n","protected":false},"excerpt":{"rendered":"Calculate the molar mass of ammonium phosphate, (NH4)3PO4.149.0 g\/mol113.0 g\/mol242.0 g\/mol121.0 g\/mol The Correct Answer and Explanation is : The molar mass of ammonium phosphate, ((NH_4)_3PO_4), can be calculated by adding the molar masses of all the atoms in the formula. Therefore, the molar mass of ammonium phosphate ((NH_4)_3PO_4) is approximately 149.0 g\/mol, and the […]<\/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-192509","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/192509","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=192509"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/192509\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=192509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=192509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=192509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Phosphate ion<\/strong> ((PO_4^{3-})): The molar mass of phosphorus (P) is approximately 30.97 g\/mol, and the molar mass of oxygen (O) is approximately 16.00 g\/mol. The phosphate ion consists of one phosphorus atom and four oxygen atoms, so: