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Determine the pH of an HF solution of each of the following concentrations. In which cases...

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Chemistry

Determine the pH of an HF solution of each of the followingconcentrations. In which cases can you not make the simplifyingassumption that x is small? (Ka for HF is 6.8×10−4.)

a) 0.260 M

b) 4.80×10−2 M

c) 3.00×10−2 M

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