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An excess of Na2S2O3 reacts with aqueous...

An excess of `Na_2S_2O_3` reacts with aqueous `CuSO_4` to give

A

`CuS_2O_3`

B

`Cu_2S_2O_3`

C

`Na_2[Cu(S_2O_3)_2]`

D

`Na_4[Cu_6(S_2O_3)_5]`

Text Solution

Verified by Experts

The correct Answer is:
D
`CuSO_(4) + Na_(2)S_(2)O_(3) rarr CuS_(2)O_(3) + Na_(2)SO_(4)`
`2CuS_(2)O_(3) + Na_(2)S_(2)O_(3) rarr Cu_(2)S_(2)O_(3) + Na_(2)S_(4)O_(6)`
`3Cu_(2)S_(2)O_(3) + 2Na_(2)S_(2)O_(3) rarr underset("Sodium cuprothiosulphate")(Na_4[Cu_6(S_2O_3)_5]`
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