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A weak monobasic acid is 10% dissociated in 0.05 M solution. What is the percent dissociation in 0.15 M solution?
Concept: Types of Electrolyte
Define conjugate acid-base pair.
Concept: Acids and Bases in Daily Life
Write any four applications of buffer solution.
Concept: Buffer Solutions
Vinegar contains ______ acid.
Concept: Acids and Bases in Daily Life
Explain buffer action of sodium acetate-acetic acid buffer.
Concept: Buffer Solutions
Define acids according to Bronsted-Lowry theory.
Concept: Acids and Bases in Daily Life
Draw a neat and well labelled diagram of primary reference electrode.
Concept: Galvanic or Voltaic Cells - Introduction
Conductivity of a solution is 6.23 x 10-5 Ω-1cm-1 and its resistance is 13710Ω. If the electrodes are 0.7cm apart, calculate the cross-sectional area of electrode.
Concept: Conductance of Electrolytic Solutions - Introduction
Define “Molar conductivity”.
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
On calculating the strength of current in amperes if a charge of 840C (coulomb) passes through an electrolyte in 7 minutes, it will be
- 1
- 2
- 3
- 4
Concept: Electrolytic Cells and Electrolysis - Introduction
The charge of how many coulomb is required to deposit 1.0 g of sodium metal (molar mass 23.0 g mol-1) from sodium ions is -
- 2098
- 96500
- 193000
- 4196
Concept: Electrolytic Cells and Electrolysis - Introduction
Draw neat and labelled diagram of dry cell.
Concept: Batteries >> Primary Batteries
Arrange the following reducing agents in the order of increasing strength under standard state conditions. Justify the answer
|
Element |
Al(s) |
Cu(s) |
Cl(aq) |
Ni(s) |
|
Eo |
-1.66V |
0.34V |
1.36V |
-0.26V |
Concept: Galvanic or Voltaic Cells - Introduction
Write one statement of first law of thermodyamics and its mathematical expression.
Concept: Chemical Thermodynamics and Energetic >> First Law of Thermodynamics
Calculate Ecell and ΔG for the following at 28°C :
Mg(s) + Sn2+( 0.04M ) → Mg2+( 0.06M ) + Sn(s)
E°cell = 2.23V. Is the reaction spontaneous ?
Concept: Galvanic or Voltaic Cells - Introduction
96500 coulombs correspond to the charge on how many electrons?
Concept: Electrolytic Cells and Electrolysis - Introduction
Can copper sulphate solution be stored in an iron vessel? Explain.
Concept: Galvanic or Voltaic Cells - Introduction
Resistance of conductivity cell filled with 0.1 M KCl solution is 100 ohms. If the resistance of the same cell when filled with 0.02 M KCl solution is 520 ohms, calculate the conductivity and molar conductivity of 0.02 M KCl solution. [Given: Conductivity of 0.1 M KCl solution is 1.29 S m-1 .]
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration
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
