How do i calculate the ph of a buffer solution made from 3.5116 grams of hac2h302*3h2o and 8.8mls of 3m acetic acid?
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How do i calculate the ph of a buffer solution made from 3.5116 grams of hac2h302*3h2o and 8.8mls of 3m acetic acid ? - 2874313.
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moles NaC2H3O2 * 3 H2O = 3.5116 g/ 136.09 g/mol= 0.0258
concentration acetate = 0.0258 mol / 8.8 x 10^-3 L=2.93 M
pKa of acetic acid = 4.74
pH = pKa + log [acetate]/ [acetic acid] = 4.74 + log 2.93/ 3 =4.73
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