# Conditions for the reduction of dichromate by manganese(II) to chromium(III) [closed]

The unbalanced redox reaction

$$\ce{Mn^2+ + Cr2O7^2- -> Mn^3+ + Cr^3+}$$

occurs in what type of condition?

(a) Acidic
(b) Basic
(c) Neutral
(d) Indeterminable

## closed as off-topic by Waylander, Mithoron, airhuff, Mathew Mahindaratne, andselisk♦Oct 13 at 1:17

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• Guess that would happen in any conditions. – Ivan Neretin Oct 12 at 19:29
• Or perhaps in no conditions at all :D Depends on perspective... Presence of dichromate should be a dead giveaway for what answer is expected, though. – Mithoron Oct 12 at 20:36
• So is the fact that they put $\ce{Mn^{3+}}$. Would not expect most trivalent ions to remain in solution when it's a_i. – Oscar Lanzi Oct 12 at 22:57

$$\ce{Mn^{2+} + Cr2O7^{2-} -> Mn^{3+} + Cr^{3+}}$$
$$\ce{ Mn^{2+} + Cr2O7^{2-} + 14H+ + 5e- -> Mn^{3+} + 2Cr^{3+} + 7H2O }$$