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The molar conductivity of cation and anion of salt BA are 180 and 220 mhos respectively. The molar conductivity of salt BA at infinite dilution is_____________ .
(a) 90 mhos.cm2
(b) 110 mhos.cm2.mol-1
(c) 200 mhos.cm2.mol-1
(d) 400 mhos.cm2.mol-1
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
What is the value of for the following reaction at 298 K -
6CO2+ 6H20(l) → C6H1206(s) + 602(g),
Given that: ΔG° = 2879 kj mol-1, AS = -210 JK-1 mol-1.
Concept: Relation Between Gibbs Energy Change and Emf of a Cell
Write any four applications of electrochemical series
Concept: Electrolytic Cells and Electrolysis - Introduction
With the help of the equation ΔG° = - nFEocell. Explain that cell potential is an intensive property.
Concept: Relation Between Gibbs Energy Change and Emf of a Cell
How much electricity in terms of Faraday is required to produce 20 g of Ca from molten CaCl2?
(Given: Molar mass of Calcium is 40 g mol−1.)
Concept: Electrolytic Cells and Electrolysis - Introduction
The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm−1. Calculate its molar conductivity.
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
State Kohlrausch Law.
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
Write cell reaction in lead storage battery during discharge.
Concept: Batteries >> Primary Batteries
Prove that ΔH=ΔU+ΔnRT. what is the condition under which ΔU=ΔH?
Concept: Chemical Thermodynamics and Energetic >> First Law of Thermodynamics
Derive a relation between ΔH and ΔU for a chemical reaction. Draw neat labelled diagram of calomel electrode. Resistance and conductivity of a cell containing 0.001 M KCI solution at 298K are 1500Ω and 1.46x10-4 S.cm-1 respectively.
Concept: Electrochemical Cells
Number of faradays of electricity required to liberate 12 g of hydrogen is:
Concept: Electrolytic Cells and Electrolysis - Introduction
The conductivity of 0.001 mol L-1 solution of CH3COOH is 3.905× 10-5 S cm-1. Calculate its molar conductivity and degree of dissociation (α) Given λ°(H+)= 349.6 S cm2 mol-1 and λ°(CH3COO)= 40.9S cm2mol-1.
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
Define electrochemical cell
Concept: Batteries >> Primary Batteries
Following reactions occur at cathode during the electrolysis of aqueous sodium chloride solution:
Na+(aq) + e− ⟶ Na (s) E0 = 2.71 V
H+(aq) + e− ⟶ `1/2` H2 (g) E0 = 0.00 V
On the basis of their standard reduction electrode potential (E0) values, which reaction is feasible at the cathode and why?
Concept: Electrolytic Cells and Electrolysis - Introduction
Why does the cell potential of mercury cell remain constant throughout its life?
Concept: Batteries >> Primary Batteries
Define the following terms: Molar conductivity (⋀m)
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
Define the following terms: Secondary batteries
Concept: Batteries >> Primary Batteries
On passing 1.5 F charge, the number of moles of aluminium deposited at cathode are _______ [Molar mass of Al = 27 gram mol–1]
(A) 1.0
(B) 13.5
(C) 0.50
(D) 0.75
Concept: Electrolytic Cells and Electrolysis - Introduction
Write any two uses of H2SO4
Concept: Electrolytic Cells and Electrolysis - Introduction
10.0 grams of caustic soda when dissolved in 250 cm3 of water, the resultant gram molarity of solution is _______.
(A) 0.25 M
(B) 0.5 M
(C) 1.0 M
(D) 0.1 M
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
