40. Hydrazine with moderate heating decomposes to form

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40. Hydrazine with moderate heating decomposes to form a mixture of simple substances, or a mixture of nitrogen disproportionation products. Some metals accelerate one of these reactions, other - both of these reactions. When full decomposition of hydrazine in the presence of metallic rhodium is formed gas mixture density of 0.260 g / L (1 atm, 227 ° C). Under similar conditions, in the presence of copper, a mixture density of 0.418 g / l. Use of cobalt leads to the formation of the gas mixture with a relative density of helium at 4.8. Give the reactions of decomposition of hydrazine. Set, which metals catalyze each of these reactions. Answer confirm calculations. Which metal catalyzes both reactions? What is in this case, the mole fraction of hydrazine, break down into simple substances? Set bulk composition (%) of gas mixtures contained in the condition.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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