1a) A buffer solution is composed of 1.036 g of KH2PO4 and 4.424 g of na2hpo4....

1a) A buffer solution is composed of 1.036 g of KH2PO4 and 4.424 g of na2hpo4. ( for dihydrogen phosphate ion is 6.2*10^-8.) What is the pH of the buffer solution?

b) What mass of KH2PO must be added to decrease the buffer solution pH by 0.10 unit from the value calculated in part a?

2)Lactic acid (CH₃CHOHCO₂H) is found in sour milk, in sauerkraut, and in muscles after activity. (K_a for lactic acid = 1.4 × 10^-4.) If 2.03 g of NaCH₃CHOHCO₂, sodium lactate, is added to 5.00 × 10² mL of 0.160 M lactic acid, what is the pH of the resulting buffer solution?

Expert Solution

queen_honey_blossom answered 9 months ago

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