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Molarity

If 250 ml of ...

Question

If 250 ml of 0.25 M NaCl solution is diluted with water to a volume of 500 ml, the new concentration of solution is:

A

0.167M

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B

0.0167M

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C

0.125M

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D

0.0833M

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Solution

The correct option is D 0.125M
We have,

$M_{1} V_{1} = M_{2} V_{2}$

$250 \times 0.25 = M_{2} \times 500$

$M_{2} = 0.125 M$

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