A buffer of pH 10.69 is required. (a) Select from the Data Sheet the most appropriate acid/conjugate base combination. (1 pt) (b) What is the (acid):[base) in that buffer? (2 pts) (c) If, in the final buffer, the concentration of base is 0.50 M, calculate the amounts (in g) of acid and base needed to prepare 1.0 L of buffer. If a salt is needed, pick either the Ci salt or the Lit salt. (3 pts) (d) 300 mL of the buffer is taken. If 5.00 mL of 16 M HCI (MM = 36.46 g.mor) is added to the buffer, what is the new pH? (3 pts) A buffer of pH 10.69 is required. (a) Select from the Data Sheet the most appropriate acid/conjugate base combination. (1 pt) (b) What is the (acid):[base) in that buffer? (2 pts) (c) If, in the final buffer, the concentration of base is 0.50 M, calculate the amounts (in g) of acid and base needed to prepare 1.0 L of buffer. If a salt is needed, pick either the Ci salt or the Lit salt. (3 pts) (d) 300 mL of the buffer is taken. If 5.00 mL of 16 M HCI (MM = 36.46 g.mor) is added to the buffer, what is the new pH? (3 pts)