Question

Some nickel(ii) sulfate solution was carefully placed
in the bottom of a beaker of water. The beaker was
then covered and left for several days.

a Describe what you would see after:
(i) a few hours
(ii) several days.
b Explain your answer to a using your ideas of the
kinetic theory of particles.
c What is the name of the physical process that
takes place in this experiment?​

Answer 1

Explanation:

From the given statement, expected changes are given below:

i) Colour turns from blue to green.

ii) A brown colour is found to be deposited on iron nail surface.

b) Yes, the nature of these changes are chemical. The reason behind this is 'iron sulphate' and copper are produced in the reaction.

c) The reaction is:

Copper sulphate(Blue)+Iron(Shining white)→Iron sulphate(Green)+Copper(Brown).

Answer 2

Answer:

a.Since nickel is more reactive than copper, a single-displacement reaction occurred: Ni + CuSO4 -> Cu + NiSO4.

b.In liquids , there are larger spaces between particles and the particles move freely. Forces between particles are weaker. Liquids may be compressed.