a silver article turns black when kept in open for a few days
name the process involvrd
what is the black substance

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Solution

When silver reacts with the traces of hydrogen sulphide present in atmosphere, it forms silver sulphide which is black in colour.
The balanced equation is given below :
H₂S + Ag → Ag₂S + H₂
This process in known as corrosion or tarnishing.

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Q. A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. Silver articles turn black when kept in the open for a few days because of _________.

Question 38

A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.

(a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.

(b) Name the black substance formed and give its chemical formula.

A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. Name the black substance formed and give its chemical formula :

Q. Why do silver articles turn black when kept open for a few days?
(a) Name the phenomenon involved.
(b) Name the black substance formed and give its chemical formula.

Q. Silver articles turn black when exposed to the atmosphere for a few days.

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a silver article turns black when kept in open for a few daysname the process involvrdwhat is the black substance

When silver reacts with the traces of hydrogen sulphide present in atmosphere, it forms silver sulphide which is black in colour. The balanced equation is given below : H2S + Ag → Ag2S + H2 This process in known as corrosion or tarnishing.

a silver article turns black when kept in open for a few days
name the process involvrd
what is the black substance

When silver reacts with the traces of hydrogen sulphide present in atmosphere, it forms silver sulphide which is black in colour.
The balanced equation is given below :
H₂S + Ag → Ag₂S + H₂
This process in known as corrosion or tarnishing.