Chemistry

Given these standard reduction potentials at 25 C
1. Cr3+ + e- ===> Cr2+ E1=-0.407 V
2. Cr2+ + 2e- ===> Cr(s) E2=-0.913 V

determine the standard reduction potential at 25C for the half-reaction equation
Cr3+ + 3e- ===> Cr(s)

E=?

When I tried, I got 1.08V and I honesty can't figure out what I did wrong =/

asked by Bridget
  1. Never mind, it's -.744V I figured it out!

    posted by Bridget
  2. good.

    posted by DrBob222
  3. If the ministers do not visit the plepoe and the media say, "Illi ishtondu galate aaguvaaga maanya mantriyavaru elli iddaru?" It becomes a issue. The opposition party joins, whole world starts shouting about the inhumanity of the govt.ministersetc.The plepoe and the enemies of the govt want some pampering than real work.Actually I agree that the the govt and police can save time and utilise it for useful acitivities.

    posted by 1wwkPteZRmn

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