Q2 of 53 Page 61

The colour of pH paper strip at the pH valued of 1, 7, and 14 will be:

At the pH value of 1 the pH paper strip is Red, at the pH value of 7 the pH paper strip is green and at the pH value of 14 the pH paper strip is blue in colour.

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25

Give reason why:

(a) tartaric acid is added while making banking powder?


(b) bleaching powder is used for disinfecting drinking water?


(c) strong acid and concentrated acid do not mean the same thing?

 1

With the increase in the concentration of hydrogen ions, the pH value will:

 3

Which of the following is a strong acid?

 4

Which of the following is a weak acid?