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Chemistry Questions

  • 03-11-2019 12:32pm
    #1
    Paddy223
    Registered Users, Registered Users 2 Posts: 145 ✭✭


    Anyone know much on some of these..

    1) A buffered solution contains 0.04 M CH3COOH (Ka for CH3COOH is 1.8 x 10-5
    ) and
    0.08 M CH3COONa. Calculate the pH of the solution using suitable equations.

    2) Calculate the molarity of 4.2 grams of H2SO4 in 500 ml of solution. The molar mass
    is 98.1 g/mol. Then calculate the pH and pOH of this solution.

    3)What is the molarity of 10.0 g of cane sugar in 200 ml of H2O? The molar mass of
    C12H22O11 - 342 g.

    4) Hydrogen peroxide solution for hair bleaching is prepared by mixing 5.0 g of H2O2
    per 100 ml of solution. What is the molarity and the % w/v of the solution?


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