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  • May 26, 2009, 01:02 AM
    Asoom
    How to get Kb ?
    The PH of 0.1M MCl (M^+ is an unknown cation ) was found to be 4.7. Write the ionic equation for the hydrolysis of M^+ and its corresponding equilibrium expression Kb . Calculate the value of Kb
  • May 26, 2009, 05:02 AM
    Perito
    Quote:
    The pH of 0.1M MCl (M^+ is an unknown cation ) was found to be 4.7. Write the ionic equation for the hydrolysis of M^+ and its corresponding equilibrium expression Kb . Calculate the value of Kb
    Hydrolysis of M+:

    (Equation 1). The pH is 4.7, so we're in acid solution.

    (Equation 2)

    where [] indicates concentration.

    (Equation 3)

    Can you take it from here? You'll have to figure out [MOH] and [M^+] to calculate Kb.

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