Which one of the following reactions cannot be used to set u p an electrochemical cell?A. `Fe+2H^(+)rarrFe^(2+)+H_(2)`B. `Mg+Sn^(2+)rarrMg^(2+)+Sn`C. `Cl_(2)+2KBrrarr2KCl+Br_(2)`D. `AgNO_(3)+NaClrarrAgCl+NaNO_(3)`.

Which one of the following reactions cannot be used to set u p an elec

1.	Which one of the following reactions cannot be used to set u p an electrochemical cell?A. `Fe+2H^(+)rarrFe^(2+)+H_(2)`B. `Mg+Sn^(2+)rarrMg^(2+)+Sn`C. `Cl_(2)+2KBrrarr2KCl+Br_(2)`D. `AgNO_(3)+NaClrarrAgCl+NaNO_(3)`.
Answer» Correct Answer - D The reaction `AgNO_(3)NaClrarrAgCl+NaNO_(3)` Cannot be used to set up an electrochemical cell s it is not a redox reaction.

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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.
Limiting molar conductivity of `NH_(4)OH` [i.e., `Lambda_(m)^(@)(NH_(4)OH)`] is equal to:A. `Lambda_(m (NH_(4)Cl ))^(@) + Lambda_(m (NaCl))^(@) - Lambda_(m(NaOH))^(@)`B. `Lambda_(m (NaOH))^(@) + Lambda_(m(NaCl))^(@) - Lambda_(m(NH_(4)Cl))^(@)`C. `Lambda_(m(NH_(4)OH))^(@) + Lambda_(m (NH_(4)Cl))^(@) - Lambda_(m(HCl))^(@)`D. `Lambda_(m (NH_(4)Cl))^(@) + Lambda_(m (NaOH))^(@) - Lambda_(m(NaCl))^(@)`
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For the cell reaction `Cu^(2+)(C_(1),aq.)+Zn(s)hArrZn^(2+)(C_(2),aq)+Cu(s)` of an electrochemical cell, the change in free energy `(DeltaG)` of a given temperature is a function ofA. `lnC_(1)`B. `lnC_(2)//C_(1)`C. `ln (C_(1) + C_(2))`D. `ln C_(2)`
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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 ?

Which one of the following reactions cannot be used to set u p an electrochemical cell?A. `Fe+2H^(+)rarrFe^(2+)+H_(2)`B. `Mg+Sn^(2+)rarrMg^(2+)+Sn`C. `Cl_(2)+2KBrrarr2KCl+Br_(2)`D. `AgNO_(3)+NaClrarrAgCl+NaNO_(3)`.

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