Study the standard reduction potential given below and answer the questions that follow. The letters are not actual symbols of the elements

Actual symbols of elements EQ values

M (aq) ²⁺ + 2e → M(s) -0.76V

M (aq) ²⁺ + 2e →M(s) - 2.36V

P (aq) ⁺ + e →P(s) -0.80V

Q (aq)²⁺ + 2e → Co + (s)→ - 0.14V

(a) The standard reduction potential for Fe²⁺ is 0.44V. Select the element which would best protect iron from rusting ( 1 mk)

(b) Calculate the E^Q value for the cell M(s) / M²⁺ (a) // P⁺(aq) P(s)