Home work o
Calculate the pH of a solution containing:
a) 0.0500 M methanoic acid and 0.100 M sodium
methanoate. (K, =1.6 x 10-4 mol dm-3)
b) 0.0100 M benzoic acid and 0.0400 M sodium
benzoate (Ka = 6.3 x 10-5 mol dm-3).
c) 0.100 M ethanoic acid and 0.200 M sodium
ethanoate (pK, ethanoic acid = 4.8)​

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