# How many litres of water must be added to

Question:

How many litres of water must be added to 1 litre of an aqueous solution of $\mathrm{HCl}$ with a pH of 1 to create an aqueous solution with $\mathrm{pH}$ of 2 ?

1. $0.1 \mathrm{~L}$

2. $0.9 \mathrm{~L}$

3. $2.0 \mathrm{~L}$

4. $9.0 \mathrm{~L}$

Correct Option: 4,

Solution: