MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistrySolutionsGeneral

What is the molarity of a solution containing 10g of NaOH in 500 mL of solution?

A.0.25 mol L-1

B.0.75 mol L-1

C.0.5 mol L-1✓ Correct

D.1.25 mol L-1

Explanation

no.of moles Molarity= Volume of solution in L Number of moles in 10 g of NaOH are calculated as, W 10 No.of moles = 0.25 mol MW 40 Therefore, molarity of solution is = 1 0.25 mol 1000 M = 0.5 mol L 500 L x

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