The black coating formed on the surface of silver articles due to corrosion is -silver sulphidesilver bicarbonatesilver oxidesilver carbonate

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Corrosion

The black coa...

Question

The black coating formed on the surface of silver articles due to corrosion is ______.

silver bicarbonate

No worries! We‘ve got your back. Try BYJU‘S free classes today!

silver sulphide

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

silver oxide

No worries! We‘ve got your back. Try BYJU‘S free classes today!

silver carbonate

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B silver sulphide
Corrosion is a process of conversion of a metal into its compound ie. oxides or carbonates etc. by continuous interaction with atmospheric air and water vapour.

On exposure to air for a long time, silver articles combine with sulphur in the atmosphere. As a result, black coating of silver sulphide is formed on their surface. The reaction involved is:
$2 Ag(s) + H_{2} S(g) \to {Ag}_{2} S(s) + H_{2} (g)$

Suggest Corrections

Similar questions

The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
(a) oxide (b) hydride (c) sulphide (d) carbonate

Q. The black coating formed on the surface of silver articles due to corrosion is ______.

Q. The colour of the coating formed on silver and copper articles as a result of corrosion respectively are

Due to corrosion iron gets a brown coating, copper gets a green coating and silver gets a black coating.

A black coating is observed on silver articles when left open in surroundings. This is due to .

Join BYJU'S Learning Program