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

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

A

`0.1L`

B

`0.9L`

C

`2.0L`

D

`9.0L`

Text Solution

Verified by Experts

`pH=1rArr [H^(+)]=10^(-1)=0.1M`
`pH=2rArr [H^(+)]=10^(-2)=0.01M`
for dilution of `HCl M_(1)V_(1)=M_(2)V_(2)`
`0.1xx1=0.01xxV_(2)`
`V_(2)=10L`
Volume of water added `=10-1=9 litres`.
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