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Question

How many moles of NaCl are present in 200 mL of 0.5 M NaCl solution?

A

1 mol
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B

0.1 mol
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C

0.5 mol
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D

2 mol
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Solution

The correct option is B
0.1 mol
Molarity=Moles of soluteVolume of Solution(in litres)0.5=Moles of solute200×1000
Moles of solute=0.5×2001000=0.1 mol

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