Question

lo 3. A 0.200 M solution of HCl is ad resulting solution concentration of H2PO- in the solution? For phosphoric acid. (a) 0.0205 molar on containing 0.150 moles of sodium phosphate (NasPO). The is then diluted to exactly 1.00 L, at which time the pH was found to be pH 8.00. What is the Kai-7.11 x 103, K 6.32 x 10, K)-7.1x 10s, (b) 0.150 molar (c) 0.0750 molar following statements is true regarding the isoionic point and the isoelectric point? (a) The isoionic point and the isoelectric point are the same thing t the isoelectric point only the ions H2A+, A·H', and OH. are present and the concentrations of HA. and A-are ual to each other. At the isoelectric point, the average charge of the polyprotic acid is 0, and the concentration of H2A is equal o concentration of A JA 8. How many ml of 12.0 M HCI would be added to 500.0 mL. of 0.100 M NaSO, to produce a buffer with a pH of K2 6.6x 10* 7.50? Assume no volume change. For H2SO, Kai - 1.23 x 102 and 1.36 mL HCI (b) 2.81 mL HCI (c) 4.17 mL HC 9. What is the pH of a 0.100 M solution of potassium hydrogen phthalate, KHC H.0.2 For phthalic acid, pkai- 2.950 and pKa 5.408. (a) 1.98 (b) 3.20 (c) 4.18

Answer 1

solution: