Consider the following four titrations (a-d): a. 50 ml of 0.15 m nh3 (kb = 1.8×10-5) by 0.15 m hcl b. 50 ml of 0.15 m hcl by 0.15 m naoh c. 50 ml of 0.15 m hocl (ka = 3.5×10-8) by 0.15 m naoh d. 50 ml of 0.15 m hf (ka = 7.2×10-4) by 0.15 m naoh part 1 rank the four titrations in order of increasing ph at the halfway point to equivalence (lowest to highest ph). use the letters a, b, c, and d to represent the various titrations. < < < part 2 rank the four titrations in order of increasing ph at the equivalence point. use the letters a, b, c, and d to represent the various titrations. < < < part 3 which titration requires the largest volume of titrant (hcl or naoh) to reach the equivalence point? (enter "none" if no titration requires more than the others.) submitshow hin