black metallic oxide which reacts with hydrochloric acid to give a coloured solution?

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Solution

The solution is as follows:

1. Black metallic oxide is copper oxide ( CuO).

2. The reaction is as follows:

CuO(s) + 2 HCl (aq) $\to$ CuCl₂(aq) + H₂(g)

3. CuCl₂ is green in colour.

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(b) two colourless gases which when mixed produce a white solid.
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black metallic oxide which reacts with hydrochloric acid to give a coloured solution?

The solution is as follows: 1. Black metallic oxide is copper oxide ( CuO). 2. The reaction is as follows: CuO(s) + 2 HCl (aq) → CuCl2(aq) + H2(g) 3. CuCl​2 is green in colour.

The solution is as follows:

1. Black metallic oxide is copper oxide ( CuO).

2. The reaction is as follows:

CuO(s) + 2 HCl (aq) $\to$ CuCl₂(aq) + H₂(g)

3. CuCl₂ is green in colour.