Question

When a black metal compound x is heated with a colourless gas y2?

Answer 1

Answer:

When a black metal compound XO is heated with a colourless gas Y2 , then metal X and another compound Y2O are formed. Metal X is red-brown in colour which does not react with dilute acids at all. Gas Y2 can be prepared by the action of a dilute acid on any active metal. The compound Y2O is a liquid at room temperature which can turn anhydrous copper sulphate blue. (a) What do you think is metal X ? (b) What could be gas Y2 ? (c) What is compound XO ? (d) What is compound Y2O? (e) Write the chemical equation of the reaction which takes place on heating XO with Y2 . (f) What type of chemical reaction is illustrated in the above equation ?

(a) Copper (Cu) (b) Hydrogen (H2) (c) Copper oxide (CuO) (d) Water (H2O) (e) CuO + H2 Cu + H O (f) Displacement reaction (which is also a redox reaction)

Answer 2

Answer:

When a black metal compound XO is heated with a colourless gas Y2 , then metal X and another compound Y2O are formed. Metal X is red-brown in colour which ...