Question

What is ph scale? how it is used ?

Answer 1

A measure of acidity or alkalinity of water soluble substances (pH stands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic. Values above 7 indicate alkalinity which increases as the number increases, 14 being the most alkaline. This scale, however, is not a linear scale like a centimeter or inch scale (in which two adjacent values have the same difference). It is a logarithmic scale in which two adjacent values increase or decrease by a factor of 10.

Answer 2

Ph Scale: A measure of acidity or alkalinity of water soluble substances (pHstands for 'potential of Hydrogen').

Uses:- It is used to measure the acidity or basicity of a substance. Acidity is the amount of hydrogen protons present in a solution and basicity is the amount ofhydroxide ions present in a solution.