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The P^(H) of a I lit solution is 2. It i...

The` P^(H)` of a I lit solution is 2. It is diluted with water till its `p^(H)` becomes 4, How many litres of water is added?

A

99

B

9

C

999

D

`9.9`

Text Solution

Verified by Experts

The correct Answer is:
A
`pH = 2, N_1= 0.01 N , pH =4, N_2 =10 ^(-4) N`
` V_t = 1 " lit" , V_2 =? rArr N_1V_1 = N_2V_2`
` 10 ^(-2) xx 1 =V_2xx 10 ^(-4) rArr V_2 = 100 " lit " `
vol of water added `= V_2 -V_1 = 99 ` lit
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