An electrochemical cell is composed of a platinum indicator electrode and a silver-silver chloride ( Ag|AgCl ) reference electrode in a solution where the [Mn2+]/[Mn3+]=0.0743 . Calculate the cell potential if the Ag|AgCl reference electrode is replaced with a saturated calomel reference electrode (SCE). The standard reduction potential for the Mn3+/Mn2+ half-reaction is 1.56 V.

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]