1.

Which among the following are auto - redox reactions ?

Answer»

`P_(4)+OH^(-) rarrH_(2)PO_(2)^(-) +PH_(3)`
`S_2O_(3)^(2-) rarrSO_(4)^(-2)+S`
`H_(2)O_(2) rarr H_(2)O+O_2`
`AGCL +NH_(3) rarr [AG(NH_3)_(2)]Cl`

Solution :`* P_(4)+OH^(-) rarrH_2PO_4^(-)+PH_3`
`*S_(2)O_3^(2-)rarrSO_4^(2-)+S`
`* H_2O_2 rarrH_2O+1/2O_2`


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