If an iron rod is dipped in `CuSO_(4)` solutionA. Blue colour of the solution turns greenB. Brown layer is deposited on iron rodC. No change occurs in the colour of the solutionD. Blue colour of the solution vanishes

If an iron rod is dipped in `CuSO_(4)` solutionA. Blue colour of the s

1.	If an iron rod is dipped in `CuSO_(4)` solutionA. Blue colour of the solution turns greenB. Brown layer is deposited on iron rodC. No change occurs in the colour of the solutionD. Blue colour of the solution vanishes
Answer» Correct Answer - B Brown layer is deposited o iron rod because Cu has greater reduction potential than that of `Fe^(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 ?

If an iron rod is dipped in `CuSO_(4)` solutionA. Blue colour of the solution turns greenB. Brown layer is deposited on iron rodC. No change occurs in the colour of the solutionD. Blue colour of the solution vanishes

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