Question

a reddish brown metal x when heated in presence of oxygen forms a black compound y which is basic in nature when heated with hydrogen gas gives back y. identify x and y . write the chemical equation between y and h2. identify the substances which are oxidized and reduced

Answer 1

The metal X is copper. Copper on being heated in the presence of oxygen forms copper oxide which is basic in nature and black in colour. The chemical equation for the above reaction is as follows

Heat
 2Cu+O - - - - - 2CuO
2


If hydrogen gas is passed over this black coating that is CuO, the black coating turns brown as the reverse reaction takes place and copper is obtained back. The chemical equation for this reaction is as follows
Heat
CuO+H - - - - - Cu+H O
2 2

Thus, substance X is copper (Cu) and Y is copper oxide (CuO). 

Answer 2

Answer:

PLS REFER THE EXPLANATION HOPE THIS HELPS!

Explanation:

The metal X is copper. Copper on being heated in the presence of oxygen forms copper oxide which is basic in nature and black in color. The chemical equation -

2Cu+O - - - - - 2CuO

CuO+H - - - - - Cu+H O