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Which one of the following reacts with c...

Which one of the following reacts with conc. `H_(2)SO_(4)` ?

A

Au

B

Ag

C

Pt

D

Pb

Text Solution

Verified by Experts

The correct Answer is:
B
Concentrated `H_(2)SO_(4)` reacts with Ag on heating to given `SO_(2)`
`2Ag+2H_(2)SO_(4) to Ag_(2)SO_(4) +2H_(2)O+SO_(2)`
The attack of conc.` H_(2)SO_(4)` on Pb is prevented due to the formation of insoluble `PbSO_(4)` layer. Conc. `H_(2)SO_(4)` does not attack Au or Pt.
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