{"id":133009,"date":"2024-08-22T12:39:05","date_gmt":"2024-08-22T12:39:05","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=133009"},"modified":"2024-08-22T12:39:08","modified_gmt":"2024-08-22T12:39:08","slug":"which-of-the-following-is-correct-regarding-the-ph-scale","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/08\/22\/which-of-the-following-is-correct-regarding-the-ph-scale\/","title":{"rendered":"Which of the following is correct regarding the pH scale?"},"content":{"rendered":"\n

Which of the following is correct regarding the pH scale?<\/p>\n\n\n\n

A.
A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4<\/p>\n\n\n\n

B.
A substance with a pH of 3 is two times more acidic than a substance with a pH of 4<\/p>\n\n\n\n

C.
A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4<\/p>\n\n\n\n

D.
A substance with a pH of 3 is 10 times more alkaline than a substance with a pH of 4<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The correct statement regarding the pH scale is: a. A substance with a pH of 3 is 10 times as acidic as a substance with a pH of 4. Explanation: 1. The pH scale is a measure of how acidic or basic (alkaline) a substance is. It ranges from 0 to 14, with 7 being neutral, below 7 being acidic, and above 7 being basic. 2. Each whole pH value below 7 is 10 times more acidic than the next higher value. Similarly, each whole pH value above 7 is 10 times more basic than the next lower value. 3. In this case, the difference between a pH of 3 and 4 is 1 unit. Since each unit represents a factor of 10 in acidity, a substance with a pH of 3 is indeed 10 times as acidic as a substance with a pH of 4. Therefore, the correct statement is that a substance with a pH of 3 is 10 times as acidic as a substance with a pH of 4.<\/p>\n\n\n\n

Final answer:
A substance with a pH of 3 is 10 times as acidic as a substance with a pH of 4, due to the logarithmic nature of the pH scale. Thus, the correct option is a) A substance with a pH of 3 is 10 times as acidic as a substance with a pH of 4.<\/p>\n\n\n\n

Explanation:
The correct answer regarding the pH scale is: ‘A substance with a pH of 3 is 10 times as acidic as a substance with a pH of 4.’ This is because the pH scale is a logarithmic scale measuring the concentration of hydrogen ions ([H+]) in a substance. For each unit change in pH, the acidity or basicity of a solution changes tenfold. Thus, a substance with a pH of 3 has 10 times more [H+] than a substance with a pH of 4, making it 10 times more acidic.<\/p>\n","protected":false},"excerpt":{"rendered":"

Which of the following is correct regarding the pH scale? A.A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4 B.A substance with a pH of 3 is two times more acidic than a substance with a pH of 4 C.A substance with a pH […]<\/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-133009","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/133009","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=133009"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/133009\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=133009"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=133009"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=133009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}