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Calculate the pH of buffer solution composed of 0.01 M weak base BOH and 0.02 M of its salt BA. [Kb = 1.8 × 10–5 for weak base]
Concept: Buffer Solutions
Name one amphoteric solvent.
Concept: Acids and Bases in Daily Life
The pH of a weak monoacidic base is 11.2, and its OH– ion concentration is ______.
Concept: The pH Scale
Write the relationship between solubility and solubility product for PbI2.
Concept: Solubility Product >> Solubility product
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
