Discussion
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- Question
The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal __________ in the two phases.
Options- A. potential energy
- B. intermolecular forces
- C. kinetic energy
- D. total energy
- Correct Answer
- kinetic energy
- 1. The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
Options- A. relative humidity.
- B. relative saturation.
- C. percentage saturation.
- D. none of these. Discuss
- 2. If 1 Nm3 of O2 contains 'N' number of molecules, then number of molecules in 2Nm3 of SO2 will be
Options- A. N
- B. N/2
- C. 2N
- D. 4N Discuss
- 3. pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be
Options- A. 0
- B. 10
- C. 7
- D. 14 Discuss
- 4. As per Kirchoff s equation, the heat of reaction is affected by the
Options- A. pressure
- B. volume
- C. temperature
- D. molecularity Discuss
- 5. Claussius Clapeyron equation applies to the __________ process.
Options- A. sublimation
- B. melting
- C. vaporisation
- D. all (a), (b) & (c) Discuss
- 6. For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.
Options- A. sodium chloride
- B. sodium carbonate monohydrate
- C. anhydrous sodium sulphate
- D. hypo Discuss
- 7. With increase in temperature, the surface tension of water
Options- A. increases
- B. decreases
- C. remains constant
- D. increases linearly Discuss
- 8. The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.
Options- A. limiting
- B. real
- C. saturated
- D. normal Discuss
- 9. Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are pvB and pvw respectively. The partial pressure of benzene in air-vapour mixture is
Options- A. PvB
- B. xB.PvB
- C. (Patm - Pvw)xB
- D. xB.Patm Discuss
- 10. The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H2O condenses, the final mole percent of H2 in the gas on a dry basis will be
Options- A. 10%
- B. 5%
- C. 18.18%
- D. 20% Discuss
Stoichiometry problems
Search Results
Correct Answer: percentage saturation.
Correct Answer: 2N
Correct Answer: 7
Correct Answer: temperature
Correct Answer: all (a), (b) & (c)
Correct Answer: sodium chloride
Correct Answer: decreases
Correct Answer: saturated
Correct Answer: xB.PvB
Correct Answer: 20%
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