Question

Define the term pH.

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Answer 1

Answer:

a measurement of the level of acid or alkali in a substance

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Answer 2

Answer:

A pH scale is a tool for measuring acids and bases. The scale ranges from 0-14: Litmus paper is an indicator used to tell if a substance is an acid or a base. The color of the paper matches up with the numbers on the pH scale to indicate what kind of substance is being tested. For example, Vinegar is an acid and measures 2.4 on the pH scale.

PH stands for Hydrogen potentials. It refers to the concentration of the hydrogen ions in a solution. This is the indicator of a solution’s acidity or alkalinity.

Points to Remember on pH Scale :-

• pH of strong acid or base does not depend upon temperature.
• pH of weak acid decreases with increase in temperature due to increase in ionization.
• pH of weak base increases with increase in temperature due to increase in ionization or [OH-] ion concentration