The unit of molar conductivity is:
The cell constant of a conductivity cell is defined as:
Where l = distance between electrodes and A = area of cross-section of each of the electrodes
Molar conductivity is defined as:
Where k = conductivity, G = conductance, l = distance between two electrodes and Vm = volume of solution containing 1 mol of electrolyte
For a dilute solution of a strong electrolyte, the variation of molar conductivity with concentration is given by:
Which of the following ion is expected to have least value of molar conductivity at infinite dilution in an aqueous solution:
Which of the following ion is expected to have highest value of molar conductivity at infinite dilution in an aqueous solution:
H+ ions will have the maximum molar conductivity amongst the given cations due to Grothus conduction.
The degree of dissociation of a weak electrolyte is given by:
Which of the following ion has highest molar conductivity at infinite dilution in an aqueous solution:
Exceptionally high values are found for H+ (349.8 S·cm2/mol) and OH− (198.6 S·cm2/mol), which are explained by the Grotthuss proton-hopping mechanism for the movement of these ions.
The equilibrium constant of acetic acid in an aqueous solution of concentration C is given by
Molar conductivity of Fe2(SO4)3 is given by:
Equivalent conductivity of Fe2(SO4)3 is related to molar conductivity by the expression:
Which of the following expressions is correct:
According to kholaraus law,
NH4OH = NH4 + OH
i.e. NH4 + Cl + Na + OH – Na – Cl = NH4Cl + NaOH - NaCl
If x is the specific resistance of the electrolyte solution and y is he molarity of the solution, then is given by:
Molar conductivity is defined as the conductivity of an electrolyte solution divided by the molar concentration of electrolyte.
∧m = (k × 1000)/M
= 1/x × 1000/y
When a conductance cell was filled with a 0.0025 M solution of K2SO4, its resistance was 326 Ω. If cell constant is 0.2281 cm-1, the specific conductance (Ω-1cm-1) of K2SO4 solution is:
Equivalent conductance of 0.1 M HA (weak acid) solution is 10 cm2 equivalent–1. The pH of HA solution is(molar conductivity at infinite dilution is 200).
For HCl solution at 25ºC, the equivalent conductivity at infinite dilution is 425 Ω-1 cm2 eq-1. The specific conductance of a solution of HCl is 3.825 Ω-1 cm-1. If the apparent degree of dissociat ion is 90%, the normality of solution is
The conductance at infinite dilution follow the order
The correct relation which depicts the Debye-Huckel Onsager Theory for strong electrolytes is:
For stronger electrolytes:
Am = Amo - (A + BAmo)(c)1/2ac
The unit of A in Debye-Huckel-Onsager equation for strong electrolytes is:
Which of the following solutions will show the minimum value of transference number of Cl–1 ions: