Question

A commercially available sample indicate that 80% HNO3 W/We.find the molarity of solution if density of solution is1. 02g/ ml

Answer 1

Answer:

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Answer 2

Since molarity is defined as moles of solute per liter of solution, we need to find the number of moles of nitric acid, and the volume of solution.

molar mass of nitric acid (HNO3) = 1 + 14 + (3x16) = 15 + 48 = 63 g/mole

1.42 g/ml x 1000 ml = 1420 g/liter

1420 g/liter x 0.70 = 994 g/liter of pure HNO3 (the 0.7 is to correct for the fact that it is 70% pure)

994 g/liter x 1 mole/63 g = 15.77 moles/liter = 15.8 Molar HNO3