When a piece of hard boiled egg is left in contact with silver spoon a black spot is formed on the spoon explain?

Answer 1

They only get the black ring if you do not refresh after cooking, as soon as the eggs are boiled pour off the hot water and put the eggs under a cold running tap for a few minutes, this quickly cools the eggs and prevents the black ring.

Answer 2

egg contains proteins

proteins contains S (sulphur)

Silver is Ag

2Ag + S --> Ag2S

Ag2S is black coloured. chemical reaction to the protiens in the egg and the silver. Sulfur in the egg tarnishes the spoon. Because sulphurous compounds silver sulphide will be formed and silver spoon will have black spots of silver sulphide.

Answer 3

This is a reaction from the sulfur in the egg and the active element in silver This is a reaction from the sulfur in the egg and the active element in silver