chemistry

A procedure calls for 100ml of 20% H2SO4, SG=1.14. How much of the concentrated acid (98%), SG=1.84, must be diluted with water to prepare 100ml of acid of the required strength?

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  1. M of the diluted stuff is
    1.14 g/mL x 1000 mL x 0.20 x 1/98 = 2.33M

    M of the strong stuff is
    1.84 x 1000 x 0.98 x 1/98 = 18.4M

    Then use the dilution formula.
    mLA x MA = mLB x MB
    100 x 2.33 = mLB x 18.4M
    Solve for mL B. I obtained approx 13 mL

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