This question has multiple parts . Work all the parts to get…

Will you please help me on this problem?? Thank you
This question has multiple parts . Work all the parts to get the most points .Calculate the PHI at the halfway point and at the equivalence point for each of the following titrations[email protected] 100 . 0 m[ of 0 . 20 M HIC , HS Oz ( Ka = 6. 4 X 10 – 5 ) titrated by 0 . 10 M NaOHPH at the halfway point =PH at the equivalence point =\ 100 . 0 m[ of 0 . 20 M C 2 HIS NHL 2 ( Kb = 5. 6 X 10 – 4 ) titrated by 0 . 50 M HINO }PH at the halfway point =PH at the equivalence point[email protected] 100 . 0 m[ of 0 . 70 M H CI titrated by 0 . 25 M NaOHPH at the halfway point =PH at the equivalence point =”What do the light reactions of photosynthesis supply the Calvin cycle? What process is most directly driven by light energy?”