1a) A buffer solution is composed of 1.036 g of KH2PO4 and 4.424g of na2hpo4. ( for dihydrogen phosphate ion is 6.2*10^-8.) What isthe pH of the buffer solution?
b) What mass of KH2POÂ Â must be added to decrease thebuffer solution pH by 0.10 unit from the value calculated in parta?
2)Lactic acid (CH3CHOHCO2H) is found insour milk, in sauerkraut, and in muscles after activity.(Ka for lactic acid = 1.4 × 10-4.) If 2.03 gof NaCH3CHOHCO2, sodium lactate, is added to5.00 × 102 mL of 0.160 M lactic acid, what is the pH ofthe resulting buffer solution? |
