(a) In aqueous solution at pH 0, Mn 3+ disproportionates to MnO 2 and Mn 2+ ....

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(a) In aqueous solution at pH 0, Mn³⁺ disproportionates to MnO₂ and Mn²⁺. Write equations for the two half-reactions involved in this process.

(b) Use Fig. 8.2 to obtain values of Eº for the half-equations in part (a).

(c) Determine Eºcell and a value of ΔGº(298 K) for the disproportionation of Mn³⁺ (aq) at pH 0. Write an equation to which this value of ΔGº(298 K) refers.

Figure 8.2.

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Inorganic Chemistry

ISBN: 9781292134147

5th Edition

Authors: Catherine Housecroft

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Question Posted: Jul 23, 2023 03:47 AM

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(a) In aqueous solution at pH 0, Mn 3+ disproportionates to MnO 2 and Mn 2+ ....

Question:

Acidic solution (pH 0) [MnO4] Alkaline solution (pH 14) [MnO4] +0.90 +0.56 [HMnO4] +1.69 [MnO4] +2.10 +1.51 +0.59 +0.27 MnO₂ +0.95 [MnO4]³ +0.60 +0.93 Mn³+ +1.23 +1.54 MnO₂ Mn²+ +0.15 -1.19- -0.04 Mn₂O3 Mn -0.23 Mn(OH)2 -1.56 Mn

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a The disproportionation of Mn3 in aqueous solution at pH 0 can be represented by the following half...View the full answer

Inorganic Chemistry

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