# chemistry

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need help figure out how to do these problem:

1)Calculate the pH of this solution: 1.55 X 10^-2 M HBr

2)Determine the pH of this solution: pOH = 8.3

thanks

• chemistry -

HBr is a strong acid; i.e., it ionizes 100%. Therefore, the H^+ is the same as the concn of HBr.
pH = -log(H^+) = -log(0.0155)

pH + pOH = pKw = 14

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