1.

What do you mean by the acidimetry and alkalimetry?

2.

Which ions are responsible for the alkalinity of water?

3.

Can OH ^? and HCO ^? ₃ ion coexist?

4.

How can you determine the extent of alkalinity present in water sample?

5.

Which indicator is used in the titration of NaOH and HCl?

6.

Explain the color change of acid-base indicators.

7.

Why are both phenolphthalein and methyl orange are used in determine of alkalinity?

8.

Why can the three types of alkalinity constituents not be present together?

9.

Define an indicator.

10.

What is pH range of phenolphthalein and methyl orange?

11.

What is the nature of phenolphthalein and methyl orange?

12.

Write the reactions taking place is this experiment.

13.

What are the demerits of the highly alkaline water?

14.

What do you understand by alkaline water?

1.

The determination of concentration of acid by standard alkali is known as acidimetry and the reverse process is alkalimetry.

2.

Alkalinity of natural waters is due to the presence of OH ^?, CO ^2? ₃ and HCO ^? ₃ ions.

3.

No, these two ions cannot coexists due to the following reaction

4.

The alkalinity may be determined by titrating the water sample with a standard acid solution first to phenolphthalein end point and then continuing the titration to methyl orange end point.

5.

In the titration of NaOH and HCl phenolphthalein indicator is used.

6.

This can be explained...