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A 23.10 mL solution has a concentration of 0.166 M sodium fluoride (NaF) and 0.183 M...

A 23.10 mL solution has a concentration of 0.166 M sodium fluoride (NaF) and 0.183 M hydrogen fluoride (HF). What is the concentration (M) of fluoride ions (F-) after 3.58 mL of 0.40 M HCl is added to the solution (assume that the dissociation of HF is small relative to the concentration of HF and F-)?

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