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

Question

1 litre of aqueous solution of HCl has pH = 1 . How many litres of water must be added to create an aqueous solution with pH of 2 ?, 2 . 0, 9 . 0, 0 . 1, 0 . 9

MARKS App · Accepted Answer

pH = 1 = - log H + H + = 10 - 1 M Final pH = 2 ; H + = 10 - 2 M M 1 V 1 = M 2 V 2 0 . 1 M × 1 Litre = 0 . 01 V 2 V 2 = 10 L Final volume = 10 L Water added = 10 - 1 = 9 L

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