Calculate the mole ratio of NaF to HF required to create a buffer with pH=4.10. Ka(HF)=6.3×10−4...

Question

Question

Calculate the mole ratio of NaF to HF required to create a buffer with pH=4.10. Ka(HF)=6.3×10−4

Express your answer using two significant figures.

[NaF][HF] = ??

Answer 1

Answer #1

from hindusson hasselbalch equelion pH= pka + log (nap) 4.10 3.2 + log Naf pka = -log(ka) = -60 g( 6.3x104) HE NAF 0.899 HE 0

Answer 2

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