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1) The ionization constant for NH4+ is K = 5.8 x 10-10 at 25oC. It is...

1) The ionization constant for NH4+ is K = 5.8 x 10-10 at 25oC. It is in a reversible equilibrium with ammonia and H+.

NH4+ --> NH3 + H+

where, H+ + NH3 --> NH4+ with a k1 = 2.300 x 1010 M-1 s-1

A temperature jump from 20oC to 25oC is made on a 0.1 M NH4Cl solution at pH 6. Calculate the relaxation time in microseconds for the reaction, assuming that the mechanism is given by the ionization equation shown. Assume that the pH is buffered. (show work please)

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