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?

The P^(H) of a I lit solution is 2. It is diluted with water till its

1.	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?
Answer» 99 9 999 `9.9` Solution :`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