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    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%?
    A 15.44% Correct Answer Incorrect Answer
    B 15.44 N Correct Answer Incorrect Answer
    C 15.44 M Correct Answer Incorrect Answer
    D 44.15 M Correct Answer Incorrect Answer

    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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