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Mole Fraction

100 mL of HCl...

Question

$100 mL$ of $H C l$ solution having molarity $1 M$ is mixed with $400 mL$ of water. Calculate final molarity of $H C l$ solution.

0.4 M

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0.25 M

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0.5 M

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0.2 M

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Solution

The correct option is D $0.2 M$
We know that $M_{1} V_{1} = M_{2} V_{2} \Rightarrow 100 \times 1 = M_{2} \times 500 \Rightarrow M_{2} = 0.2 M$

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