1. A solution containing the following was prepared: 0.11 M Pb2 , 1.5 *10-6 M Pb

Question

1. A solution containing the following was prepared: 0.11 M Pb2 , 1.5 *10-6 M Pb4 , 1.5 *10-6 M Mn2 , 0.11 M MnO4-, and 0.94 M HNO3. For this solution, the following balanced reduction half-reactions and overall net reaction can occur.(for the picture above [A-C])& D

D) Determine the pH at which the given concentrations of Pb2 , Pb4 , Mn2 , and MnO4– would be at equilibrium.

2. Rank these species by their ability to act as an oxidizing agent. (Best oxidizing agent to poor) ni^2+, Cl2, Ca^2+, Fe^2+

E=1.690 V E1.507 V A) Determine E cell, AG°, and K for this reaction Number Number Number K8.57x 103" Fe0.183 176567.5:5 30 cell B) Calculate the value for the cell potential, Ecell, and the free energy, AG, for the given conditions. Number Number 22769.28J Scroll down to answer all parts of this question. (A through D) 0.236 cell C) Calculate the value of Ecell for this system at equilibriunm Number cell

Explanation / Answer

1) At eqb., Ecell = 0 V

2) An oxidizing agent is one which itself undergoes reduction.

Thus, the required order is :- Cl2 > Ni2+ > Fe2+ > Ca2+

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