CHEM1084_U8_LAB 8_Prelab Pre Lab Questions Show all work for full credit. 1. What is the oxidation number of oxygen in HNO3, H2O2, CO2 and Cr2O3? 2. Balance the following reaction equation in an...

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CHEM1084_U8_LAB 8_Prelab Pre Lab Questions Show all work for full credit. 1. What is the oxidation number of oxygen in HNO3, H2O2, CO2 and Cr2O3? 2. Balance the following reaction equation in an acidic medium: Fe2+ + MnO4- Fe3+ + Mn2+ 3. Write the equation for the cell reaction and calculate the standard emf of a cell that uses Mg/Mg2+ and Cu/Cu2+ half cell reactions at 25°C under standard state conditions. Half reactions Mg2+ (aq) + 2e- Mg (s) E° = -2.37 V Cu2+ (aq) + 2e- Cu (s) E° = +0.34 V 4. What is the reduction potential of a cell? 5. Sketch galvanic cell based on the following half-reactions. Label the cathode, anode, electrolyte solutions and the salt bridge. Show the direction of electron flow in external circuit connecting two electrodes and ion migration through the salt bridge (with NaNO3) connecting cell compartments. What is the overall balanced cell reaction? Reduction half- reaction Ag+ (aq) + e- Ag (s) Oxidation half- reaction Ni (s) Ni2+ (aq) + 2e-
Answered 4 days AfterAug 25, 2021

Answer To: CHEM1084_U8_LAB 8_Prelab Pre Lab Questions Show all work for full credit. 1. What is the oxidation...

Nayana answered on Aug 30 2021
141 Votes
CHEM1084_U8_LAB 8_Prelab
Pre Lab Questions
Show all work for full credit.
1. What is the oxidat
ion number of oxygen in HNO3, H2O2, CO2 and Cr2O3?
Ans: HNO3 – (-2)
H2O2 – (-1)
CO2 – (+4)
Cr2O3 – (-2)
2. Balance the following reaction equation in an acidic medium:
Fe2+ + MnO4- Fe3+ + Mn2+
Ans: Oxidation number of every atom:
Left: Fe = +2, Mn = +7, O = -2
Right: Fe = +3, Mn = +2
5Fe2++1MnO4-→5Fe3++1Mn2++4H2O
...
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