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NEET levelSingle correct optionDifficulty 1 of 3mc121

50 mL of a 2 M solution is diluted with water to a final volume of 200 mL. The molarity of the diluted solution is

A $8 M$
B $1.0 M$
C $0.5 M$
D $0.25 M$

Answer: C

Moles of solute stay constant:

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

, so

M_{2} = 2 \times 50/200 = 0.5

M.

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