Cr2O7^2-(aq) + 3 H2O(l) <=> 2 CrO4^2-(aq) + 2 H3O+(aq) The equilibrium system represented by the equ — Equilibrium Chemistry Question
Question
Cr2O7^2-(aq) + 3 H2O(l) <=> 2 CrO4^2-(aq) + 2 H3O+(aq)
The equilibrium system represented by the equation above initially contains equal concentrations of Cr2O7^2-(aq) and CrO4^2-(aq). Which of the following statements correctly predicts the result of adding a sample of 6.0 M NaOH(aq) to the system, and provides an explanation?
A.
The mixture will become more orange because OH-(aq) will oxidize the Cr in CrO4^2-(aq).
B.
The mixture will become more yellow because OH-(aq) will reduce the Cr in Cr2O7^2-(aq).
C.✓ Correct
The mixture will become more yellow because OH-(aq) will shift the equilibrium toward products.
D.
The color of the mixture will not change because OH-(aq) does not appear in the equilibrium expression.
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