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What are the three types of solutions on pH scale?

The pH scale The chemical properties of many solutions enable them to be divided into three categories - acidic, alkaline and neutral solutions. The pH scale is used to measure acidity and alkalinity: solutions with a pH less than 7 are acidic

What is the range of the pH scale?

How acidic or alkaline a substance is (the pH of the substance) can be measured using the pH scale, a continuous range that stretches from below 0 to above 14. Most common pH values occur between 0 and 14.

Why is the pH scale used to measure acidity?

The pH scale is used to measure acidity and alkalinity. When an acid is neutralised, it forms a salt. When an acid is dissolved in water we get an acidic solution. When a base dissolves in water it is an alkali and makes an alkaline solution. If a solution is neither acidic nor alkaline it is neutral. Pure water is neutral, and so is paraffin.

Which of the following has a pH of less than 7?

Acids have a pH of less than 7. Alkalis have a pH more than 7. Water and neutral solutions have a pH of exactly 7.

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