Class XII

Conductivity of 0.00241 M acetic acid is 7.896 × 10–510–5 S cm–1cm–1. If ΔomΔmo for acetic acid is 390.5 S cm2mol–1cm2mol–1, what is its dissociation constant?
  1. 2.05 × 10–5
  2. 1.85 × 10–5
  3. 1.75 × 10–5
  4. 1.95 × 10–5
According to Faraday’s Second Law of Electrolysis the amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional
  1. their chemical equivalent weights
  2. to their atomic weight
  3. to their Atomic number
  4. to their nuclear masses
standard hydrogen electrode operated under standard conditions of 1 atm H2 pressure, 25°C, and pH = 0 has a cell potential of
  1. 1.0 V
  2. 0.5 V
  3. 0.33 V
  4. 0V
How much electricity in terms of Faraday is required to produce 20.0 g of Ca from molten CaCl2?
  1. 1.3F
  2. 1F
  3. 1.2F
  4. 0.8F
Charge on one mole of electrons - Faraday is approximately
  1. 99500 C mol–1
  2. 96500 C mol–1
  3. 98500 C mol–1
  4. 97500 C mol–1
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LKG - 12th

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