Discussion
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- Question
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%
- Correct Answer
- 20%
- 1. 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
- 2. 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
- 3. With increase in temperature, the surface tension of water
Options- A. increases
- B. decreases
- C. remains constant
- D. increases linearly Discuss
- 4. 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
- 5. 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 Discuss
- 6. Degrees of freedom will be equal to the number of components for a system comprising of
Options- A. only soluble liquid components.
- B. partially miscible two liquid components system having two phases.
- C. two liquid components and one solute (soluble in both the liquids).
- D. none of these. Discuss
- 7. __________ chart is a graph related to Antonie equation.
Options- A. Ostwald
- B. Cox
- C. Mollier's
- D. Enthalpy-concentration Discuss
- 8. The most convenient way of expressing solution concentration is in terms of
Options- A. mole fraction
- B. normality
- C. molality
- D. molarity Discuss
- 9. The heat capacity of a substance is
Options- A. greater for liquid state than for solid state.
- B. lower for liquid state than for gaseous state.
- C. higher for solid state than for liquid state.
- D. equal for solid and liquid states below melting point. Discuss
- 10. Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg.
Options- A. 80.38
- B. 80
- C. 79.62
- D. 78.51 Discuss
Stoichiometry problems
Search Results
Correct Answer: xB.PvB
Correct Answer: saturated
Correct Answer: decreases
Correct Answer: sodium chloride
Correct Answer: kinetic energy
Correct Answer: only soluble liquid components.
Correct Answer: Cox
Correct Answer: molarity
Correct Answer: greater for liquid state than for solid state.
Correct Answer: 79.62
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