Calculate the pH of a .7 M solution of ammonium chloride

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  1. NH4Cl is a salt and the NH4^+ hydrolyzes.
    ........NH4^+ + H2O ==> NH3 + H3O^+

    Set up the Ka equation for NH4^+ as
    Ka = (Kw/Kb) = (NH3)(H3O^+)/(NH4^+).
    You know Kw. Kb is the ionization constant for the base (NH3) which you can find in your text or notes. Solve for x and convert to pH.

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