The reaction of cr2 + (aq) with cr2o2-7 (aq) in acid solution to form cr3 + (aq). calculate δg∘rxn.

Question

Chemistry

Cutie

27 November, 09:20

The reaction of cr2 + (aq) with cr2o2-7 (aq) in acid solution to form cr3 + (aq). calculate δg∘rxn.

+4

Answers (1)

Know the Answer?

Hanna Orozco · Answer 1

The reaction is:

6 Cr²⁺ + Cr₂O₇²⁻ + 14 H⁺ → 8 Cr³⁺ + 7 H₂O

E₀ = 1.33 - (-0.5) = 1.83 V

ΔG = - n f E₀

= - 6 * 96485 * 1.83

= - 1059405.3 J / mol

= - 1059.4 kJ / mol