When a black metal compound XO is heated with a colourless gas Y2 , then metal X and another compound Y2O
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 ?
1 Answers
(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)