The unbalanced chemical equation is:<\/p>\n\n\n\n
NH3+O2\u2192NO+H2O\\text{NH}_3 + \\text{O}_2 \\rightarrow \\text{NO} + \\text{H}_2\\text{O}NH3\u200b+O2\u200b\u2192NO+H2\u200bO<\/p>\n\n\n\n
Step 1: Balance Nitrogen (N)<\/h3>\n\n\n\n
On the left side, there is 1 nitrogen atom from ammonia (NH\u2083). On the right side, nitrogen appears in nitric oxide (NO), so we need to balance nitrogen first.<\/p>\n\n\n\n
To balance nitrogen, place a coefficient of 1 in front of NO:<\/p>\n\n\n\n
NH3+O2\u21921\u2009NO+H2O\\text{NH}_3 + \\text{O}_2 \\rightarrow 1 \\, \\text{NO} + \\text{H}_2\\text{O}NH3\u200b+O2\u200b\u21921NO+H2\u200bO<\/p>\n\n\n\n
Step 2: Balance Hydrogen (H)<\/h3>\n\n\n\n
On the left side, there are 3 hydrogen atoms in NH\u2083. On the right side, hydrogen appears in water (H\u2082O), so we need to place a coefficient of 3 in front of H\u2082O to balance the hydrogens.<\/p>\n\n\n\n
The equation becomes:<\/p>\n\n\n\n
NH3+O2\u21921\u2009NO+3\u2009H2O\\text{NH}_3 + \\text{O}_2 \\rightarrow 1 \\, \\text{NO} + 3 \\, \\text{H}_2\\text{O}NH3\u200b+O2\u200b\u21921NO+3H2\u200bO<\/p>\n\n\n\n
Step 3: Balance Oxygen (O)<\/h3>\n\n\n\n
Now, we need to balance oxygen atoms. On the right side, there is 1 oxygen in NO and 3 oxygens in the 3 H\u2082O molecules. This gives us a total of 4 oxygen atoms on the right side.<\/p>\n\n\n\n
To balance this, place a coefficient of 2 in front of O\u2082 (because each O\u2082 molecule contains 2 oxygen atoms):<\/p>\n\n\n\n
NH3+2\u2009O2\u21921\u2009NO+3\u2009H2O\\text{NH}_3 + 2 \\, \\text{O}_2 \\rightarrow 1 \\, \\text{NO} + 3 \\, \\text{H}_2\\text{O}NH3\u200b+2O2\u200b\u21921NO+3H2\u200bO<\/p>\n\n\n\n
Step 4: Check the balance<\/h3>\n\n\n\n
Now, let’s check the atom count:<\/p>\n\n\n\n
- \n
- Nitrogen: 1 atom on both sides.<\/li>\n\n\n\n
- Hydrogen: 3 atoms on both sides (3 H\u2082O molecules contribute 6 hydrogens, and 3 hydrogens come from NH\u2083).<\/li>\n\n\n\n
- Oxygen: 4 atoms on both sides (2 O\u2082 molecules on the left give 4 oxygens, and 1 from NO + 3 from H\u2082O on the right).<\/li>\n<\/ul>\n\n\n\n
Final Balanced Equation:<\/h3>\n\n\n\n
NH3+2\u2009O2\u2192NO+3\u2009H2O\\text{NH}_3 + 2 \\, \\text{O}_2 \\rightarrow \\text{NO} + 3 \\, \\text{H}_2\\text{O}NH3\u200b+2O2\u200b\u2192NO+3H2\u200bO<\/p>\n\n\n\n
This is the correctly balanced equation.<\/p>\n\n\n\n
Explanation<\/h3>\n\n\n\n
Balancing chemical equations follows the principle of the conservation of mass, meaning that the number of atoms of each element must be the same on both sides of the equation. By adjusting the coefficients (the numbers placed in front of compounds), we ensure that this principle is followed. In this reaction, ammonia (NH\u2083) reacts with oxygen (O\u2082) to produce nitric oxide (NO) and water (H\u2082O). Each element is balanced step by step, starting with the element that appears in the least number of compounds and moving to others, ensuring all atoms are conserved.<\/p>\n\n\n\n
![\"\"](\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner8-350.jpeg\")
<\/figure>\n","protected":false},"excerpt":{"rendered":"Balance each equation by entering the correct coefficients. NH3 + O2 \u2192 NO + H2O The Correct Answer and Explanation is: The unbalanced chemical equation is: NH3+O2\u2192NO+H2O\\text{NH}_3 + \\text{O}_2 \\rightarrow \\text{NO} + \\text{H}_2\\text{O}NH3\u200b+O2\u200b\u2192NO+H2\u200bO Step 1: Balance Nitrogen (N) On the left side, there is 1 nitrogen atom from ammonia (NH\u2083). On the right side, nitrogen […]<\/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-248925","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/248925","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=248925"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/248925\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=248925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=248925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=248925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}