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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?

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?

Grade:11

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
7 years ago
Molarity of HCl at pH = 1 = 10^-1 = .1
Molarity of HCl at pH = 2 = 10^-2 = .02

Calculate volume of solution at pH = 2 using dilution equation:
M1V1 = M2V2
.02 * V1 = .1* 1.0
V1 = .1/.02 litre
V1 =5 litre

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