The cell constant of a conductivity cell is usually determined by measuring the resistance of the elctrolytic solutions `"_____"` whose conductivity is already known accurateble various concentrations and at different temperatures.A. `KCl`B. `HCl`C. `NaCl`D. `LiCl`

The cell constant of a conductivity cell is usually determined by meas

1.	The cell constant of a conductivity cell is usually determined by measuring the resistance of the elctrolytic solutions `"_____"` whose conductivity is already known accurateble various concentrations and at different temperatures.A. `KCl`B. `HCl`C. `NaCl`D. `LiCl`
Answer» Correct Answer - A The quantity `1//A` is called cell constant denoted by the symbol `G^(**)`. It depends on the distance between the electrodes and their area of cross-section and has the dimension of `"length"^(-1)` and can be calculated if we knoew `l` and `A`. However, measurement of `l` and `A` is not only inconlvenient but also unreliable . `KCl` solutions are generally used because their conductivity is known accurately at various concentrations and temperatures.

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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 ?

The cell constant of a conductivity cell is usually determined by measuring the resistance of the elctrolytic solutions `"_____"` whose conductivity is already known accurateble various concentrations and at different temperatures.A. `KCl`B. `HCl`C. `NaCl`D. `LiCl`

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