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Question

What is the mass of KI in 14.86 mL of a 32.44 g/100 mL aqueous KI solution?

A
6.85 g
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B
3.85 g
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C
5.82 g
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D
4.82 g
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Solution

The correct option is D 4.82 g
Given:
Volume of the solution = 14.86 mL
Consider the mass of the solute to be x g.
Since, 100 mL of the solution contains 32.44 g of KI,
14.86 mL of solution will contain,
=32.44100 g mL1×14.86 mL=4.82 g
14.86 mL KI solution contains 4.82 g of KI.

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