Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four
choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.
Q. For the following equilibrium,
PCl5(g) PCl3(g) + Cl2 (g)
Vapour density is found to be 100 when 1 mole of PCI5 is taken in 10 dm3 flask at 300 K. Thus, equilibrium pressure is
For the equilibrium, N2O4(g) 2NO2(g)
here, d is experimental vapour density and D is theoretical vapour density. Thus, for the equilibrium
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In the following equilibrium at 400 K in 1 dm3 flask,
COCl2 (g)CO(g) + Cl2 (g),
ratio of theoretical and experimental vapour density is 1.4. Thus, equilibrium constant Kc is
A(g) is 100% converted into B according to the reaction,
A(g) 3b(g)
Value of at this point is
In the dissociation of PCI5(g)into PCI3(g)and Cl2(g), values of(1 + x)have been plotted versus D/d. Thus, correct graph is
CCI4(g) dissociates 50% into gaseous free radicals at 1000 K and at equilibrium experimental vapour density is found to be 38.5. Thus, CCI4(g) dissociates under the given conditions to
0.578 g N2O4(g) dissociates into 1dm3 flask at 308 K to give a pressure of 24.12 kPa.
N2O4 (g) 2NO2(g)
Thus, degree of dissociation of N2O4 is
SO3(g)is partially dissociated into SO2(g)and O2(g) at 900K and 1 atm as:
The density of the equilibrium mixture was found to be 0.866 gdm-3. Thus, degree of dissociation of SO3 (g) is
Direction (Q. Nos. 9-12) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given options (a),(b),(c),(d)
Passage I
Vapour density of the equilibrium mixture of NO2 and N2O4 is found to be 40 for the gaseous phase equilibrium at 400 K in 1 dm3 flask.
N2O4 (g) 2NO2(g)
Q. Equilibrium Constant Kc is
Passage I
Vapour density of the equilibrium mixture of NO2 and N2O4 is found to be 40 for the gaseous phase equilibrium at 400 K in 1 dm3 flask.
N2O4 (g) 2NO2(g)
Q. Percentage of N02 in the mixture by volume is
Passage II
COCI2 (phosgene) gas dissociates according to
COCl2 (g) CO(g) + Cl2 (g)
At 101.325 kPa and at 724 K density of the gas mixture is 1.162 g dm-3.
Q. Observed molar mass of the gaseous mixture is
Passage II
COCI2 (phosgene) gas dissociates according to
COCl2 (g) CO(g) + Cl2 (g)
At 101.325 kPa and at 724 K density of the gas mixture is 1.162 g dm-3.
Q. Equilibrium constant Kp is
Direction (Q. Nos. 21 and 22) This section contains 2 questions. when worked out will result in an integer from 0 to 9 (both inclusive)
Q. In the following hypothetical equilibrium,
Values of D/d (along y-axis) have been plotted
versus a (along x-axis.)
α = degree of dissociation
d = experimental vapour density
D = theoretical vapour density
Q. What is the value of D/d at the point A corresponding to α = 1 ?
Direction (Q, Nos. 14 - 15) These questions are subjective in nature, need to be solved completely on notebook.
NO2 is 40.0% of the total volume at 300 K in the following equilibrium,
N2O4 (g) 2NO2(g)
Calculate the ratio of vapour density in the absence and presence of dissociation.
PCI5(g) dissociates according to the reaction at 523 K.
PCl5(g) PCl3(g) + Cl2 (g) KP = 1.78 atm
Compute the density of the equilibrium mixture in g dm-3 at 1 atm pressure.
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