Conductance of Electrolytic Solution

Q. how to find the equivalent weight of k2so4.Al2(so4)3.24H2o.

Q. Specific conductance of $0.1MNaCl$ solution is $1.01\times {10}^{-2}oh{m}^{-1}c{m}^{-1}$. Its molar conductance in $oh{m}^{-1}c{m}^{2}mo{l}^{-1}$ is :

1. $1.01\times {10}^2$
2. $1.01\times {10}^3$
3. $1.01\times {10}^4$
4. $1.01$

Q.

A $5mmold{m}^{-3}$ aqueous solution of $KCl$ has a conductance of $0.55mS$ when measured in a cell of cell constant $1.3c{m}^{-1}$. The molar conductivity of this solution is ___________ $mS{m}^{2}mo{l}^{-1}$. (Round off to the nearest integer).

Q. We have taken a saturated solution of AgBr. K_sp of AgBr is 12x10^-14. If 10^-7 mole of AgNO₃ are added to 1 litre of this solution, find conductivity of this solution in terms of 10^-7 Sm^-1 units. Given λ^o_(Ag⁺) = 6x10^-3 Sm²mol^-1, λ^o_(Br^-) = 8x10^-3 Sm²mol^-1, λ^o_(NO3^-) = 7x10^-3 Sm²mol^-1. Neglect the contribution of solvent.

Q. from the following molar conductivities at infinite dilution molar conductivity of AL2(SO4)3 = 858 S cm2 mol -1 NH4OH = 238.3 S cm 2 mol -1 NH2(SO4)= 238.4 S cm2 mol -1 Calculate molar conductivity for AL(OH)3

Q. The resistance of 0.01 N solution of an electrolytewas found to be 210 ohm at 298 K using aconductivity cell of cell constant 0.66 cm1. Theequivalent conductance of solution is :-(1) 314.28 mho cm eq(2) 3.14 mho cm2 eq(3) 314.28 mho cm2 eq(4) 3.14 mho cm2 eq

Q. The resistance of a conductivity cell with cell constant $1.14c{m}^{-1}$ , containing 0.001 $M$ $KCl$ at 298 $K$ is 1500 $\Omega$ . The molar conductivity of 0.001 $MKCl$ solution at 298 $K$ in $S$ $c{m}^{2}mo{l}^{-1}$ is _______. (Integer answer)

Q. 50. The conductivity of a solution containing 1 gram of anhydrous BaCl2 in 200 cm3 of water has been found to be 0.0058 S/cm.What are the molar conductivity and equivalent conductivity of the solution ?(At. at of Ba=137 and Cl= 35.5)

Q.

Conductance is the reciprocal of?

1. Resistance

2. Capacitance

3. Inductance

4. Charge

Q.

The inverse of resistance is called ________.

Q. At a particular temperature, the ratio of equivalent conductance to specific conductance of a $0.01NNaCl$ solution is:

1. ${10}^{5}c{m}^{3}equi{v}^{-1}$

2. ${10}^{3}c{m}^{3}equi{v}^{-1}$

3. $10c{m}^{3}equi{v}^{-1}$

4. ${10}^{2}c{m}^{3}equi{v}^{-1}$

Q. The molar conductance of a solution of a weak electrolyte with dilution.

1. increases
   
2. decreases
3. remains constant

Q. The resistance and conductivity of 0.02 M KCl solution are 82.4 ohm and $0.002768Sc{m}^{-1}$, respectively. When filled with 0.005 N $K_{2}S{O}_4$, the solution had a resistance of 324 ohm. Calculate conductance of $K_{2}S{O}_4$ solution

1. $3.086\times {10}^{-3}S$
   
2. $7.02\times {10}^{-3}S$
3. $5.04\times {10}^{-3}S$
   
4. $7.466\times {10}^{-3}S$

Q. 76.During electrolysis of fused NaCl which reaction occur at anode? a)Chloride ion are oxidized b) Chloride ions are reduced c) Sodium ions are oxidised d) Sodium ions are reduced

Q. Which of the following plot correctly represents the variation of concentration of a surfactant (e.g. sodium doedecyl sulphate) versus molar conductivity with regard to behavior at CMC?

1. c
2. d
3. a
4. b

Q.

The molar solubility ($mol{L}^{-1})$ of a sparingly soluble salt $M{X}_4$ is ${}^{\prime }{S}^{\prime }$. The corresponding solubility product is $K_{SP}$ . ${}^{\prime }{S}^{\prime }$ is given in terms of $K_{SP}$ by the relation

1. S = (256K_SP)^1/5

2. S = (K_SP/128)^1/4

3. S = (K_SP/256)^1/5

4. S = (128K_SP)^1/4

Q. The molar conductivity of $0.04\text{M}$ solution of $MgC{l}_2$ is $200Sc{m}^{2}mo{l}^{-1}$ at $298\text{K}$. A cell with electrodes that are $2.0{\text{cm}}^2$ in surface area and $0.50\text{cm}$ apart is filled with $MgC{l}_2$ solution.
Specific conductance of $MgC{l}_2$ solution is:
[1 Mark]

1. $8\times {10}^{-3}Sc{m}^{-1}$
2. $5\times {10}^{-3}Sc{m}^{-1}$
3. $0.03Sc{m}^{-1}$
4. $0.08Sc{m}^{-1}$

Q. What is the unit of conductance?

1. $Erg$
2. $siemens$
3. $ohms$
4. $\frac{metre}{Siemens}$

Q. What is isomorphism

Q. Electrolysis of dilute and concentrated sulphuric acid and also electrolysis of 50% of sulphuric acid

Q.

What is the inverse of resistance?

Q. The resistance of N/10 KCl aqueous solution is 25ohm. If the electrodes in the cell are 4cm apart and area having 7cm^2 each, the molar conductance of the solution will be:

Q. A 10%(w/w)by mass NaOH is mixed with 20%(w/w)NaOH then calculate the resulant molality of the solution?

Q. for which of the following electrolytes molar conductivity is three times the equivalent conductivity MgSO4.7H2O, CaCl2, NaCl , KCl.MgCl2.6H2O

Q. The equivalent conductance of $B{a}^{2+}$ and $C{l}^{-}$ are respectively $127$ and $76$ $oh{m}^{-1}$ $c{m}^2$ $e{q}^{-1}$ at infinite dilution. What will be the equivalent conductance of $BaC{l}_2$ at infinite dilution?

1. $139.5$ $oh{m}^{-1}$ $c{m}^2$ $e{q}^{-1}$
2. $203$ $oh{m}^{-1}$ $c{m}^2$ $e{q}^{-1}$
3. $279$ $oh{m}^{-1}$ $c{m}^2$ $e{q}^{-1}$
4. $101.5$ $oh{m}^{-1}$ $c{m}^2$ $e{q}^{-1}$

Q. Arrange the following compounds in the order of decreasing molar conductivity in aqueous solution.
a. K[Co$\left(N{H}_3{)}_2\right(N{O}_2{)}_4$]
b. [Cr$\left(N{H}_3{)}_3\right(N{O}_2{)}_3$]
c. $\left[Cr\right(N{H}_3{)}_5\left(N{O}_2\right){]}_3\left[Co\right(N{O}_2{)}_6{]}_2$
d. Mg[Cr$\left(N{H}_3\right)(N{O}_2{)}_5$]

1. c>d>a>b
2. c>b>a>d
3. b>a>d>c
4. c>a>d>b

Q. The metal mainly used in devising photoelectric cells is:

1. Cs
2. Li
3. Na
4. Rb

Q. 26.A certain aqueous solution of FeCl3 has density of 1.1g/ml and contains 20℅ FeCl3.Molar concentration of this solution

Q. The conductance in electrolytic solutions is due to flow of ions which are produced by decomposition of matter.

1. True
2. False

Q. Find out the concentration of following solution in terms of Molarity and Normality (a)11.2g% KOH (b)21.2g% Na2CO3