The difference between the electrode potentials of two electrodes when no current is drawn through the cell is called ___________.
a. Cell potential.
b. Electromotive Force.
c. Potential difference.
d. Cell voltage.
a. Cell potential.
b. Electromotive Force.
c. Potential difference.
d. Cell voltage.
b. Electromotive Force
The potential of a hydrogen electrode at pH = 10 is
a. 0.591 V
b. 0.00 V
c. – 0.591 V
d. -0.059 V
The conductivity of an aqueous solution of NaCl in a cell is 92 \(Ω^{−1}\) \(cm^{-1}\) the resistance offered by this cell is 247.8 Ω . Calculate the cell constant.
How many electrons flow when a current of 5 amps is passed through a solution for 193 sec ? Given F = 96500 C. \(N_0\) = 6.002 × \(10^{23}\) \(mol^{-1}\).
The conductivity of metals decreases while that of electrolytes increases with increase in temperature. Why?
The electrical resistance of a column of 0.05 M KOH solution of diameter 1 cm and length 45.5 cm is 4.55 × 10³ ohm. Calculate its molar conductivity.
The conductivity of a 0.01 M solution of acetic acid at 298 K is 1.65 x 10⁻⁴ S cm⁻¹. Calculate molar conductivity () of the solution.
The conductivity of 0.20 M solution of KCl at 298 K is 0.025 Scm⁻¹. Calculate its molar conductivity.
The molal elevation constant depends upon
(a) nature of solute.
(b) nature of the solvent.
(c) vapour pressure of the solution.
(d) enthalpy change.
How is electrical conductance of a conductor related with length and area of cross-section of the conductor?
a. G = \(l. a.k^{-1}\)
b. G = \(k. l.a^{-1}\)
c. G = \(k.a. l^{-1}\)
d. G = \(k. l.a^{-2}\)
An antifreeze solution is prepared from 222.6 g of ethylene glycol \(C_2\)\(H_4\)\((OH)_2\) and 200 g of water. Calculate the molality of the solution. If the density of this solution be 1.072 \(gmL^{-1}\), what will be the molarity of the solution?
(a) 7.20 M
(b) 12.03 M
(c) 9.11 M
(d) 6 M
Which of the following is an example of vic-dihalide?
(a) Dichloromethane.
(b) 1,2-dichloroethane.
(c) Ethylidene chloride.
(d) Allyl chloride.
Limiting molar conductivity of NH4OH is equal to -:
a. Λᵒₘ(NH₄Cl) + Λᵒₘ(NaCl) + Λᵒₘ(NaOH)
b. Λᵒₘ(NaOH) + Λᵒₘ(NaCl) - Λᵒₘ(NH₄Cl)
c. Λᵒₘ(NaOH) - Λᵒₘ(NH₄Cl) - Λᵒₘ(HCl)
d. Λᵒₘ(NH₄Cl) + Λᵒₘ(NaOH) - Λᵒₘ(NaCl)
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to-
(a) low temperature
(b) low atmospheric pressure
(c) high atmospheric pressure
(d) both low temperature and high atmospheric pressure