Question

We have 100 ml of 0.1 M KCl solution. To make it 0.2 M

(A) evaporate 50 ml water (B) evaporate 50 ml solution (C) add 0.1 mol HCl (D) add 0.01 mol KCl​

Answer 1

Answer:

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Answer 2

Answer:

So, the number of moles should be increased from 0.01 to 0.02 by adding the 0.01 moles of KCl. Hence, to make the solution of KCl to 0.2 M we have to evaporate the 50 mL water and 50 mL solution and add 0.01 mol KCl. Therefore, the correct options are (A), (B) and (D).

Explanation:

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