Advertisements
Advertisements
प्रश्न
0.05 M NaOH solution offered a resistance of 31.6 Ω in a conductivity cell at 298 K. If the cell constant of the cell is 0.367 cm-1, calculate the molar conductivity of NaOH solution.
Advertisements
उत्तर
Given:
Cell constant (b) = 0.367 cm–1
Molar concentration (C) = 0.05 M NaOH
Resistance (R) = 31.6 Ω
To find: Molar conductivity (^)
Solution:
∧m(NaOH) = ?
`k_((NaOH)) = b/R_((NaOH)) = 0.01161 Ω^-1 cm^-1`
`∧_(m(NaOH)) = (k xx 1000)/C`
`= (0.01161 xx 1000)/0.05`
= 232.2 Ω-1 cm2 mol-1
Molar conductivity = ∧m = 232.2 Ω-1 cm2 mol-1
APPEARS IN
संबंधित प्रश्न
Answer the following in one or two sentences.
Write the relationship between conductivity and molar conductivity and hence unit of molar conductivity.
The molar conductivity and conductivity of AgNO3 solution is 121.4 Ω–1 cm2 mol–1 and 2.428 × 10–3 Ω–1 cm–1 at 25 °C. What is molar concentration of AgNO3 solution?
Give SI unit of resistivity.
Write applications of Kohlrausch’s Law.
Write three important steps required to determine molar conductivity.
Calculate molar conductivities at zero concentration for CaCl2 and NaCl.
Given: molar ionic conductivities of Ca2+, Cl–, Na+ ions are respectively, 104, 76.4, 50.1 Ω–1 cm–2 mol–1
Write relation between electrolytic conductivity and molar conductivity.
For the reaction \[\ce{A -> B}\], the rate increases by a factor of 2.25 when the concentration of A is increased by 1.5. What is the order of the reaction?
The molar conductance of 0.001 M acetic acid is 50 ohm−1 cm2 mol−1. The limiting molar conductance is 250 ohm−1 cm2 mol−1. What is its degree of ionization?
The resistance of `1/10`M solution is 2.5 × 103 ohm. What is the molar conductivity of solution? (cell constant = 1.25 cm-1).
The conductivity of 0.02 M solution of NaCl is 2.6 × 10−2 S cm−1. What is its molar conductivity?
Which among the following solution has the highest conductivity (k) value?
The SI unit of resistivity and molar conductivity are respectively ____________.
What is the relation between cell constant, conductivity and electrical resistance?
Conductivity of a conductor is ____________.
A conductivity cell dipped in 0.01 M AgNO3 solution gives a resistance of 3160 ohms. If cell constant is 0.47 cm−1, what is the conductivity of AgNO3 solution?
What is the value of cell constant if conductance and conductivity of a solution is same?
What is the unit of electrical conductance?
What will be the concentration of NaCl solution, if the molar conductivity and conductivity of NaCl solution is 124.3 Ω-1 cm2 mol-1 and 1.243 × 10-4 Ω-1 cm2 respectively?
A conductivity cell dipped in 0.5 M KCl gives a resistance of 250 ohms. If the conductivity of KC I solution is 6.68 × 10-3 S cm-1, what is the cell constant?
Specific conductance of 0.1 M sodium chloride solution is 1.06 × 10−2 ohm−1 cm−1. Its molar conductance in ohm−1 cm2 mol−1 is ______.
What is the SI unit of conductivity?
A conductivity cell filled with 0.02 M AgNO3 gives at 25°C resistance of 947 ohms. If the cell constant is 2.3 cm-1, what is the molar conductivity of 0.02 M AgNO3 at 25°C?
Write the relation between molar conductivity and molar ionic conductivities for the electrolytes:
- Na2SO4
- AlCl3
The resistance of a conductivity cell with cell constant 1.14 cm−1, containing 0.001 M KCl at 298 K is 1500 Ω. The molar conductivity of 0.001 MKCl solution at 298 K in S cm2 mol−1 is ______. (Integer answer)
Which of the following expressions correctly represents molar conductivity?
