Discussion
Home ‣ Chemical Engineering ‣ Stoichiometry Comments
- Question
The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.?
Options- A. 0.2
- B. 0.1
- C. 0.4
- D. 0.6
- Correct Answer
- 0.6
- 1. Which of the following is followed by an ideal solution?
Options- A. Boyle's law
- B. Amgat's law
- C. Raoult's law
- D. Trouton's rule Discuss
- 2. In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality?
Options- A. Use of equation of state
- B. Fugacity co-efficient
- C. Activity co-efficient
- D. None of these Discuss
- 3. The molecular velocity of a real gas is proportional to (where, T = absolute temperature of the gas).
Options- A. T
- B. T
- C. T2
- D. 1/T Discuss
- 4. Two solutions A1 and A2 have pH value of 2 and 6 respectively. It implies that the solution
Options- A. A2 is more alkaline than solution A2
- B. A1 is highly acidic.
- C. A1 is very slightly acidic.
- D. both (a) &(c). Discuss
- 5. The osmotic pressure of a solution is directly proportional to the
Options- A. lowering of vapor pressure.
- B. molecular concentration of the solute.
- C. absolute temperature of a given concentration.
- D. all (a), (b) and (c). Discuss
- 6. If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will
Options- A. be reduced to l/4th.
- B. increase four times.
- C. increase two times.
- D. none of these. Discuss
- 7. "The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes". This is the __________ law.
Options- A. Dalton's
- B. Amgat's
- C. GayLussac's
- D. Avogadro's Discuss
- 8. Which of the following is not a unit of pressure?
Options- A. Parsec
- B. Kilo-pascal
- C. Bar
- D. Newton/metre2 Discuss
- 9. The atomic heat capacities of all solid elements __________ with decrease in temperature.
Options- A. increases
- B. decreases
- C. remains unchanged
- D. approach zero at 0°C Discuss
- 10. The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 x __________
Options- A. 1026
- B. 1023
- C. 1020
- D. 1019 Discuss
Stoichiometry problems
Search Results
Correct Answer: Raoult's law
Correct Answer: Activity co-efficient
Correct Answer: T
Correct Answer: both (a) &(c).
Correct Answer: all (a), (b) and (c).
Correct Answer: increase four times.
Correct Answer: Amgat's
Correct Answer: Parsec
Correct Answer: decreases
Correct Answer: 1020
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.