chemistry

calculate the pH of a 1.94M solution of nitrous acid (HNO2 - ka = 4.5E-4).

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1. Set up an ICE chart, something like the following:
............HNO2 ==> H^+ + NO2^-
initial....1.94M.....0.......0
change......-x.......+x.......+x
final......1.94-x.....x........x

Ka = (H^+)(NO2^-)/(HNO2)
Substitute from the ICE chart to the Ka expression, solve for x and convert to pH.

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2. for .148M it is 2.00

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