Calculate the volume of 0.06452 M HCl needed to titrate
(a) 20.00 mL of 0.05522 M Na₃PO₄ to a thymolphthalein end point.
(b) 25.00 mL of 0.05522 M Na₃PO₄ to a bromocresol green end point.
(c) 40.00 mL of a solution that is 0.02199 M in Na₃PO₄ and 0.01714 M in Na₂HPO₄ to a bromocresol green end point.
(d) 20.00 mL of a solution that is 0.02199 M in Na₃PO₄ and 0.01714 M in NaOH to a thymolphthalein end point.