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Homework answers / question archive / Determine the pH of an HF solution of each of the following concentrations

Determine the pH of an HF solution of each of the following concentrations

Chemistry

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

Part A

0.280 M

Express your answer to two decimal places.

Part B

4.70×10−2 M

Express your answer to two decimal places.

Part C

2.70×10−2 M

Express your answer to two decimal places.

Part D

In which cases can you not make the simplifying assumption that x is small?

In which cases can you not make the simplifying assumption that x is small?

only in (a)
only in (b)
in (a) and (b)
in (b) and (c)

pur-new-sol

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