What is used in the silvering of mirrors?

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(D) The process of depositing a uniform thin layer of silver on a clean glass surface is known as silvering of mirrors. This layer is protected by a c

Vedclass · Accepted Answer

Ammoniacal $AgNO_3 +$ Red lead $+ HCHO$

Vedclass · Answer

(D) The process of depositing a uniform thin layer of silver on a clean glass surface is known as silvering of mirrors. This layer is protected by a coating of a mixture of red lead and turpentine.The chemical reaction involved is:$2AgNO_3 + 2NH_4OH \rightarrow Ag_2O + 2NH_4NO_3 + H_2O$$Ag_2O + HCHO \rightarrow 2Ag + HCOOH$Here,$HCHO$ (formaldehyde) acts as a reducing agent to reduce silver ions to metallic silver.

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