Answer Happy

An electrochemical cell has a standard state E°cell = XXX and
the balanced chemical reaction:
4𝐻+(𝑎q) + 𝑀n𝑂2(𝑠) +
𝐶2𝑂42-(𝑎q) → 2𝐶O2(𝑔) +
𝑀n2+(𝑎q) + 2𝐻2𝑂(𝑙)
Explain the effect of the following reaction condition changes
on the nonstandard state cell potential (Ecell).
a. Increasing the concentration of
C2O42- .
b. Increasing the concentration of Mn2+.
c. Decreasing the pH of the solution