Stoichiometry Questions with Solutions - Set 22 - ObjectiveBooks

# Practice Test: Question Set - 22

1. ________ equation gives the effect of temperature on heat of reaction.
(A) Kirchoff’s
(B) Maxwell's
(C) Antoine
(D) Kistyakowsky

2. In which of the following case of mixing of a strong acid with strong base (each of 1N concentration), temperature increase will be the highest?
(A) 30 c.c acid and 30 c.c base
(B) 20 c.c acid and 25 c.c base
(C) 15 c.c acid and 35 c.c base
(D) 35 c.c acid and 15 c.c base

3. "The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface". This statement pertaining to the solubility of gases in liquid is the _________ law.
(A) Raoult's
(B) Henry's
(C) Amagat’s
(D) None of these

4. Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces?
(A) RT
(B) P + (a/V2)
(C) (V - b)
(D) 1/RT

5. A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container
(A) Will be greater than 298 K
(B) Will be 298 K
(C) Will be less than 298 K
(D) Cannot be determined

6. At higher temperatures, molal heat capacities for most of the gases (at constant pressure) _________ with increase in temperature.
(A) Varies linearly
(B) Increases
(C) Decreases
(D) Does not vary

7. As per Kirchhoff s equation, the heat of reaction is affected by the
(A) Pressure
(B) Volume
(C) Temperature
(D) Molecularity

8. The depression in freezing point of a solution is
(A) Inversely proportional to the mass of solvent
(B) Directly proportional to the mole of solute
(C) Both (a) and (b)
(D) Neither (a) nor (b)

9. The total number of atoms in 8.5 gm of NH3 is ________ × 1023.
(A) 9.03
(B) 3.01
(C) 1.204
(D) 6.02

10. Normality of a solution does not change with the increase in the
(A) Pressure
(B) Temperature
(C) Solute concentration
(D) Dilution of the solution

11. The heat capacity of a substance is
(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

12. Which of the following has the smallest least effect on the solubility of a solute into the solvent?
(A) Nature of the solute
(B) Nature of the solvent
(C) Temperature
(D) Pressure

13. If 1 Nm3 of O2 contains 'N' number of molecules, then number of molecules in 2Nm3 of SO2 will be
(A) N
(B) N/2
(C) 2N
(D) 4N

14. Pick out the wrong statement:
(A) The integral heat of solution of either component cannot be calculated from heat of mixing data
(B) The average value of heat of neutralization of dilute solutions of weak acids and bases is much less compared to that for strong acids and bases
(C) The standard heat of solution of the hydrate of a substance is the difference between the heat of solution of the anhydrous substance and its heat of hydration
(D) The accompanying enthalpy change, when a solute is dissolved in solvent, depends upon the nature & amount of the solute & the solvent, on the temperature & on the initial & final concentrations of the solution

15. Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature?
(A) Chlorine
(B) Nitrogen
(C) Ethane
(D) All the gases will have the same KE

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