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Grade: 11

                        

find the molarity of 3m solution of NaCl having density 1.05 gm/ml.

2 years ago

Answers : (1)

Seema tiwari
15 Points
							
Molarity = 3 mol L^-1 
Mass of NaCl = 1000 × density = 1000 × 1.25 = 1250 g
Mass of water in solution = 1250 - 175.5 g
Hence , molarity (m) = moles of solute / mass of solvent in kg = 3/1.0745 = 2.79m
2 years ago
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