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In photography, sodium, thisulphate is u...

In photography, sodium, thisulphate is used as

A

complexing agent

B

Oxidising agent

C

Reucing agent

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`AgBr+2Na_(2)S_(2)O_(3)to underset(("Sodium complex"))underset("Sodium argento thiosulphate")(Na_(2)[Ag(S_(2)O_(3))_(2)]+NaBr)`
In photography `Na_(2)S_(2)O_(3)` (hypo or sodium thiosulphate) is used as complexing agent It dissolves unreduced silver bromide by forming complex.
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