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How many litres of water must be added t...

How many litres of water must be added to `1 L` of an aqueous solution of `HCl` with a `pH` of `1` to create an aqueous solution with `pH` of `2`?

A

9.0 L

B

0.1 L

C

0.9 L

D

2.0 L

Text Solution

Verified by Experts

The correct Answer is:
A
Initial conc. Of HCl =`10^(-1)` M
Final conc. Of HCl after dilution =`10^(-2)` M
`M_1V_1=M_2V_2`
`10^(-1)xx1=10^(-2) xxV_2`
`V_2=0.1/0.01`=10 L
Volume of water to be added =10-1=9L
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