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Solutions Test - 13

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Solutions Test - 13
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  • Question 1
    1 / -0

    To neutralize completely 40 mL of 0.1M aqueous solution of KOH, the volume of 0.1M aqueous solution of phosphoric acid required is

    Solution

    M1v1 = M2v2
    N = M × nf
    V = 20ml

  • Question 2
    1 / -0

    Which will form maximum boiling azeotrope?

    Solution

    Negatively deviated non ideal solution.

  • Question 3
    1 / -0

    Which among the following show positive deviation?

    Solution

    (Solute- solute and > solute – solvent interactions Solvent – solvent)

  • Question 4
    1 / -0

    Which among the following show negative deviation?

    Solution

    The vapour pressure is lower than the solution, therefore it shows negative deviation.

  • Question 5
    1 / -0

    Which among the following form nearly ideal solutions?

    Solution

    The intermolecular attractive forces between benzene-benzene and toluene-toluene are nearly equal to those between benzene-toluene, this leads to the formation of ideal solution.

  • Question 6
    1 / -0

    Normality of 0.3 M phosphoric acid is

    Solution

    N = M × nf
    N = 0.3 × 3 = 0.9

  • Question 7
    1 / -0

    The concentration of a solution is 0.3 × 10−2 moles/litre. Osmotic pressure of the solution at 300K is

    Solution

    since 
    π = cRT
    R = 0.0821L atmK-1mol-1 
    C = 0.3 × 10−2
    T = 300K
    on substituting we get it as value as 0.0821atm

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