Question: please help with second one i keep getting wrong Calculate the concentrations of acetic acid (pKa=4.76) and sodium acetate necessary to prepare a 0.7M buffer

please help with second one i keep getting wrong

Calculate the concentrations of acetic acid (pKa=4.76) and sodium acetate necessary to prepare a 0.7M buffer solution at pH4.0. [acetic acid] = M [sodium acetate] =incorrectM

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