Which of the Following Involves Reduction?
A)Ba²⁺(aq)+ CrO₄^2-(aq) $\rarr$ BaCrO₄(s)
B)2 H⁺(aq)+ CO₃^2-(aq)

Multiple Choice

Which of the following involves reduction?

A) Ba²⁺(aq) + CrO₄^2-(aq) $\rarr$ BaCrO₄(s)
B) 2 H⁺(aq) + CO₃^2-(aq) $\rarr$ H₂O(l) + CO₂(g)
C) CrO₄^2-(aq) $\rarr$ Cr³⁺(aq)
D) MnO₂(s) $\rarr$ MnO₄^-(aq)
E) 2 CrO₄^2-(aq) + 2 H⁺(aq) $\rarr$ Cr₂O₇^2-(aq) + H₂O(l)