`E^(@) ` of two reactions are given below : `Cr^(3+) + 3e rarr Cr, E^(@) = -0.74 V` `OCl^(-) + H_(2)O + 2e rarr Cl^(-) + 2OH^(-), E^(@) = 0.94 V` What will be the `E^(@)` for ? `3OCl^(-) + 2Cr + 3H_(2)O rarr 2Cr^(3+) + 3Cl^(-) + 6OH^(-)`A. `1.68 V`B. `0.20 V`C. `-1.68 V`D. `-0.20 V`

`E^(@) ` of two reactions are given below : `Cr^(3+) + 3e rarr Cr, E^(

1.	`E^(@) ` of two reactions are given below : `Cr^(3+) + 3e rarr Cr, E^(@) = -0.74 V` `OCl^(-) + H_(2)O + 2e rarr Cl^(-) + 2OH^(-), E^(@) = 0.94 V` What will be the `E^(@)` for ? `3OCl^(-) + 2Cr + 3H_(2)O rarr 2Cr^(3+) + 3Cl^(-) + 6OH^(-)`A. `1.68 V`B. `0.20 V`C. `-1.68 V`D. `-0.20 V`
Answer» Correct Answer - A `E^(@) = E_(OP_(Cr))^(@) + E_(RP_(OCl^(-)))^(@)` `= 0.74 + 0.94 = 1.68 V`

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