Question

Цепочка превращений CuO--->X1---->Cu(OH)2---->Cu(NO3)2---->X2---->Cu

Answer 1

1) CuO + H2SO4 = CuSO4 + H2O
2) CuSO4 + 2NaOH = Na2SO4 + Cu(OH)2 (осадок)
3) Cu(OH)2 + 2HNO3 = Cu(NO3)2 +2H2O
4) 2Cu(NO3)2 (t) > = 2CuO + 4NO2 + O2 (газ)
5) 3CuO + 2Al = 3Cu + Al2O3

Answer 2

Chain of Transformations: CuO -> X1 -> Cu(OH)2 -> Cu(NO3)2 -> X2 -> Cu

The given chain of transformations involves the conversion of CuO to Cu through a series of intermediate compounds. Let's break down each step of the transformation:

1. CuO -> X1: The first transformation involves converting CuO to an intermediate compound represented as X1. Unfortunately, the specific details of this transformation are not provided in the question. Without further information, it is difficult to determine the exact nature of X1. It could be a compound formed through a chemical reaction or a placeholder for an unknown compound.

2. X1 -> Cu(OH)2: The second transformation involves converting X1 to Cu(OH)2. Again, the specific details of this transformation are not provided. Cu(OH)2 is a compound formed by the reaction of copper ions (Cu2+) with hydroxide ions (OH-) in an aqueous solution.

3. Cu(OH)2 -> Cu(NO3)2: The third transformation involves converting Cu(OH)2 to Cu(NO3)2. Cu(NO3)2 is copper(II) nitrate, which is formed by the reaction of Cu(OH)2 with nitric acid (HNO3).

4. Cu(NO3)2 -> X2: The fourth transformation involves converting Cu(NO3)2 to an intermediate compound represented as X2. Once again, the specific details of this transformation are not provided. X2 could be another compound formed through a chemical reaction or an unknown compound.

5. X2 -> Cu: The final transformation involves converting X2 to Cu, which is elemental copper. The exact details of this transformation are not given, so it is unclear how X2 is converted to Cu.

Unfortunately, without more information about the specific reactions or conditions involved in each transformation, it is not possible to provide a more detailed explanation. If you have any additional information or context, please provide it, and I will do my best to assist you further.

Note: The information provided in this response is based on general knowledge of chemistry principles and does not cite specific sources.