Asked by Aminat

Calculate the molar concentration of ethanoic acid needed to prepare ethanoate buffer of PH 6.8 using 0.5m solution of sodium ethanoate. Pka of ethanoate acid is 0.127

Answers

Answered by DrBob222
Do you mean 0.5M. M means molar. m means molal.

pH = pKa + log (base)/(acid)
6.8 = 0.127 + log (0.5M/x)
Sovle for x.
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