A substance with a pH of 7 is <\/p>\n\n\n\n
A) a weak base. <\/p>\n\n\n\n
B) a strong acid. <\/p>\n\n\n\n
C) neutral. <\/p>\n\n\n\n
D) a weak acid. <\/p>\n\n\n\n
E) a strong base.<\/p>\n\n\n\n
The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n The correct answer is C) neutral<\/strong>.<\/p>\n\n\n\n A pH of 7 is considered neutral because it represents a balanced concentration of hydrogen ions (H\u207a) and hydroxide ions (OH\u207b) in a solution. The pH scale ranges from 0 to 14, where a pH of 7 is in the middle. A solution with a pH lower than 7 is acidic, while a solution with a pH higher than 7 is alkaline (or basic).<\/p>\n\n\n\n At pH 7, the concentration of hydrogen ions is equal to the concentration of hydroxide ions. This balance is characteristic of pure water, which is the standard example of a neutral substance. Water dissociates into hydrogen ions and hydroxide ions in equal amounts, maintaining this neutrality. The concentration of both ions in pure water at 25\u00b0C is 1 \u00d7 10\u207b\u2077 moles per liter, which gives a pH of 7.<\/p>\n\n\n\n A substance with a pH lower than 7, such as lemon juice or vinegar, is acidic because it has a higher concentration of hydrogen ions. On the other hand, a substance with a pH greater than 7, like ammonia or sodium hydroxide, is considered alkaline or a base, as it has a higher concentration of hydroxide ions.<\/p>\n\n\n\n Therefore, a substance with a pH of 7 is neither acidic nor basic, but neutral. This neutrality is important in many biological and chemical processes, as it provides a stable environment for reactions and organisms.<\/p>\n","protected":false},"excerpt":{"rendered":" A substance with a pH of 7 is A) a weak base. B) a strong acid. C) neutral. D) a weak acid. E) a strong base. The correct answer and explanation is: The correct answer is C) neutral. A pH of 7 is considered neutral because it represents a balanced concentration of hydrogen ions (H\u207a) […]<\/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-258252","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/258252","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=258252"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/258252\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=258252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=258252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=258252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}