Question

not sure if i did either of these right and i need help solving the rest of it. thanks

error in your experiment. POST-LABORATORY QUESTIONS Procedure: Balance the redox reactions given below. Show your work on a separate sheet of paper. Write the balanced oxidation and reduction half reactions; also identify the oxidizing agent and the reducing agent. All reactions are to be balanced in acidie media, except when OH is shown. (0) Cu + 2 NO, + 4 H Cu + 2NO+ 2 H30 Oxidation Half Reaction: cu c u' + 20 Reduction Half Reaction: 2N03' 4H* + 20 → 2ND, 2H, Oxidizing agent: cu Reducing agent NO3 @_CrO2 + 4H+ 30:02 → 2Cr + Leco + 7H30 Oxidation Half Reaction: Reduction Half Reaction: Oxidizing agent: Reducing agent 128

Answer 1

1)

l Cu & NO3 ett & NO & tho Oxidation halt ran Reduction half san. 3x (Cu Cu +2 28-7 238+ NO3 + 4 H 4 NO + 2H₂O] Total balanced equation is 3 Cut 2 NO3 + 8 H + 3 uz 2 NO + 4H₂O oxidising agent – No (the one that is reduced) Reducing agent – cu (that in oxidised) » Crooz ² + H+ + C₂022 Cr +3 + CO₂ + H₂O oxidation halt sxn. Reduction half - ran. 3 [42042 200 + 2e- CRO² + 14H+ + 6e 20 + 3 * 7 H₂O Balanced equation in Cr2O7 - ² + 14H1+ 3 C2002 6CO2 + 200 1 3 4 7 H₂ oxidizing agent Cro7² Reducing agent sour