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What is the molarity of a solution containing 5.85 g of NaCl (M.W. = 58.5) in 250 mL of solution?
A0.2 M
B0.1 M
C0.4 M
D1 M
Answer & Solution
Correct answer: C. 0.4 M
Moles of NaCl = 5.85/58.5 = 0.1 mol. Volume = 0.25 L. Molarity = 0.1/0.25 = 0.4 M.
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