Question

6. Give reasons for the following:
(1) Zinc can displace copper from copper sulphate solution.
lin Silver articles become black after sometime when exposed to air.
liit) A metal sulphide is converted to its oxide to extract the metal from a sulphide ore.​

Answer 1

Answer:

zinc is more reactive than copper

Answer 2

Answer:

Hey mate here is your answers

Explanation:

1. Copper can displace silver from silver nitrate is a correct statement because copper is more reactive than silver and lies above silver in reactivity series.

It is true that sulphide ores are converted to oxides prior to their extraction. It is so because extracting a metal from its oxide is easier than extracting it from its sulphide and carbonate ores.

The process of conversion of sulphide to oxide ores is called roasting.

Hope it helps you

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