Question

When zn dust is added to sufficiently large volume of aqueous solution of copper sulphate 3.175 g of copper metal and 20 j of heat is evolve?

Answer 1

Your question is good but it is incomplete but looking at it very keenly I can give you how you can solve it.

We are told that when  Zinc, Zn dust is added to sufficiently large volume of aqueous solution of copper sulphate, CuSO4 3.175 g of copper metal and 20 j of heat is evolve.

This implies that zinc is most reactive and it displaces the copper ions from the solution and itself being oxidized.

Evolution of 20J of heat implies that the reaction is exothermic in nature.

Answer 2

Answer:

400J

Explanation: