JEE Previous Year Question

An analyst wants to convert 1 L HC1 of pH = 1 to a solution of HC1 of pH = 2. The volume of water needed to do this dilution is_____mL. (Nearest integer)

Topic: JEE PYQ

Answer: 9000. Full step-by-step solution below.

Correct answer: 9000

Solution

(9000)
The concentration of or say HC1 in both the given solution is and mole respectively. For the given amount of HC1 the concentration depends over dilution hence
=


= 10 L = 10000 mL
V = 10000-1000 mL = 9000 mL

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