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Dichromate ion is reduced by chloride ion according to the equation below. If [Cl–] is decreasing atKinetics Chemistry Question

Question

Dichromate ion is reduced by chloride ion according to the equation below. If [Cl–] is decreasing at a rate of 0.37 mol L-1 min-1, how is the concentration of Cr3+(aq) changing?
14 H+(aq) + Cr2O7 2-(aq) + 6 Cl–(aq) → 2 Cr3+(aq) + 3 Cl2(aq) + 7 H2O(l)

A.

Increasing by 0.12 mol L-1 min-1

✓ Correct
B.

Increasing by 1.11 mol L-1 min-1

C.

Decreasing by 0.12 mol L-1 min-1

D.

Decreasing by 1.11 mol L-1 min-1

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