Q1 of 53 Page 61

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

The value of pH is inversely related with the concentration of hydrogen ions. Hence, if the concentration of hydrogen ions then pH decreases.

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24

Why NaHCO3 is used in soda-acid fire extinguisher as well as for making baking powder.

 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?

 2

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

 3

Which of the following is a strong acid?