Statement-I: `H_(2)+O_(2)` fuel cell gives a constant voltage throughout its life. Because Statement-II: In this fuel cell, `H_(2)` reacts with `OH^(-)` ions yet the overall concentration of `OH^(-)` ions does not change.A. If both assertion and reason are correct and reason is correct explanation for assertion.B. If both assertion and reason are correct but reason is not correct explanation for assertion.C. If assertion is correct but reason is incorrect.D. If assertion and reason both are incorrect.

Statement-I: `H_(2)+O_(2)` fuel cell gives a constant voltage througho

1.	Statement-I: `H_(2)+O_(2)` fuel cell gives a constant voltage throughout its life. Because Statement-II: In this fuel cell, `H_(2)` reacts with `OH^(-)` ions yet the overall concentration of `OH^(-)` ions does not change.A. If both assertion and reason are correct and reason is correct explanation for assertion.B. If both assertion and reason are correct but reason is not correct explanation for assertion.C. If assertion is correct but reason is incorrect.D. If assertion and reason both are incorrect.
Answer» Correct Answer - A (a) Reason is the correct explanation for assertion.

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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^(-)`
What are elementary reactions ?

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