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33. The following reaction occurs in acidic solution: H3AsO4 + Zn = AsH3 + Zn^2+. H3AsO4 is an(n)...........agent in which the oxidation number of As is.............. 34. The oxidation number of Mn in K2MnO4 is.............. 35. When the oxidation half reaction is balanced ( for the reaction given below which occurs in acid) using the smallest integer coefficients possible, what is the coefficient of H2O in the balanced half reaction? MnO4^- + HSO3^- = MnO4^2- + SO4^2- 36. When the following oxidation-reduction reaction representing a reaction that takes place in acidic solution is correctly balanced using the smallest coefficients possible whole number coefficients, the coefficients before the MnO4^-, Bi^3+ and the H2O are: MnO4^- + BiO3^- = MnO4^- + Bi^3+ 37. The reducing agent for the forward reaction in: Mn^2+ +BiO3^- = MnO4^- + Bi^3+
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