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Iron sulphide is heated in air to form A...

Iron sulphide is heated in air to form `A`, an oxide of sulphur. `A` is dissolved in water to give an acid. The basicity of this acid is :

A

2

B

3

C

1

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A
`4FeS_2 + 11O_2 to 2Fe_2O_3 + 8SO_2`
`2SO_2 + O_2 to 2SO_3 `
`SO_3 + H_2O to H_2SO_4 ` Dibasic acid
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