Select the incorrect statement for a dry cell:A. `Mn` is reducded from `+4` to `+3` stateB. `NH_(3)` gas is liberateed outC. `Zn` is used as anodeD. A paste of `NH_(4)Cl` and `ZnCl_(2)`

Select the incorrect statement for a dry cell:A. `Mn` is reducded from

1.	Select the incorrect statement for a dry cell:A. `Mn` is reducded from `+4` to `+3` stateB. `NH_(3)` gas is liberateed outC. `Zn` is used as anodeD. A paste of `NH_(4)Cl` and `ZnCl_(2)`
Answer» Correct Answer - B `NH_(3)` produced due to cathodic reaction. `MnO_(2) + NH_(4)^(+) + e rarr MNO(OH) + NH_(3)` Combines with `Zn^(2+)` to form `Zn(NH_(3))_(4)^(2+)`

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Define molar conductivity of a solution and explain how molar conductivity changes with change in concentration of a solution for a weak and a strong electrolyte.
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Based on the data given below, the correcy order of reducing power is: `Fe_((aq.))^(3+) + e rarr Fe_((aq.))^(2+), E^(@) = +0.77 V` `Al_((aq.))^(3+) + 3e rarr Al_((s)), E^(@) = -1.66 V` `Br_(2(aq.)) + 2e rarr 2Br_((aq.))^(-), E^(@) = +1.08 V`A. `Br^(-) lt Fe^(2+) lt Al`B. `Fe^(2+) lt Al lt Br^(-)`C. `Al lt Br^(-) lt Fe^(2+)`D. `Al lt Fe^(2+) lt Br^(-)`
Based on the data given below, the correcy order of reducing power is: `Fe_((aq.))^(3+) + e rarr Fe_((aq.))^(2+), E^(@) = +0.77 V` `Al_((aq.))^(3+) + 3e rarr Al_((s)), E^(@) = -1.66 V` `Br_(2(aq.)) + 2e rarr 2Br_((aq.))^(-), E^(@) = +1.08 V`A. `Br^(-) lt Fe^(2+) lt Al`B. `Fe^(2+) lt Al lt Br^-`C. `Al lt Br^(-) lt Fe^(2+)`D. `Al lt Fe^(2+) lt Br^(-)`
What are elementary reactions ?

Select the incorrect statement for a dry cell:A. `Mn` is reducded from `+4` to `+3` stateB. `NH_(3)` gas is liberateed outC. `Zn` is used as anodeD. A paste of `NH_(4)Cl` and `ZnCl_(2)`

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