Question
What will be the concentration of nitric acid in mole
per litre in a sample which has density 1.41 gm L⁻¹ and the mass percent of nitric acid if being 69%?Solution
1. Mass of 1L solution = 1410g 2. Mass of HNO₃ = 1410 × 0.69 = 972.9g 3. Moles of HNO₃ = 972.9/63 = 15.44 4. Molarity = 15.44 mol/L
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