Given a system:
If the concentration of C at eqilibrium is increased by a factor 2, it will cause the eqilibrium concentration of B to change to:
1. two times of its original value
2. one half of its original value
3. 2 times of its original value
4. times of its original value
If little heat is added to ice liquid equilibrium in a sealed container, then:
1. Pressure will rise
2. Temperature will rise
3. Temperature will fall
4. No change in P and T
In the equilibrium,
2SO2(g) + O2 (g) 2SO3(g), the partial pressure of SO2, O2 and SO3 are 0.662, 0.101 and 0.331 atm respectively. What should be the partial pressure of oxygen so that the equilibrium concentration of SO2 and SO3 are equal.
1. 0.4 atm
2. 1.0 atm
3. 0.8 atm
4. 0.25 atm
For the equilibrium, PCl5 PCl3 + Cl2,
, temperature remaining constant:
1. Kc will increase with the increase in volume
2. Kc will increase with the decrease in volume
3. Kc will not change with the change in volume
4. Kc may increase or decrease with the change in volume depending upon its numerical value.
In the dissociation of 2HI H2 + I2, the degree of dissociation will be influenced by the:
1. Addition of inert gas at constant volume
2. Addition of inert gas at constant pressure
3. Increase of temperature
4. Increase of pressure
The correct order of increasing [H3O+] in the following aqueous solutions is:
1. 0.01 M H2S < 0.01 M H2SO4<0.01 M NaCl<0.01M NaNO2
2. 0.01 M NaCl< 0.01 M NaNO2<0.01 M H2S< 0.01 M H2SO4
3. 0.01 M NaNO2<0.01 M NaCl<0.01 M H2S<0.01 M H2SO4
4. 0.01 M H2S<0.01 M NaNO2<0.01 M NaCl<0.01 M H2SO4
The pKa of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2-3 and the pH in the small intestine is about 8. Aspirin will be:
1. Unionized in the small intestine and in the stomach
2. Completely ionized in the small intestine and in the stomach
3. Ionized in the stomach and almost unionized in the small intestine
4. Ionized in the small intestine and almost unionized in the stomach
For which salt the pH of its solution does not change with dilution?
1. NH4Cl
2. CH3COONH4
3. CH3COONa
4. None of these
For NH4HS(s) NH3 (g) + H2S(g), the observed pressure for reaction mixture in equilibrium is 1.12 atm at 106C. The value of Kp for the reaction is:
1. 3.136 atm2
2. 0.3136 atm2
3. 31.36 atm2
4. 6.98 atm2
2 mole of PCl5 were heated in a closed vessel of 2 litre capacity. At equilibrium 40% of PCl5 dissociated into PCl3 and Cl2. The value of the equilibrium constant is :
1. 0.267
2. 0.53
3. 2.63
4. 5.3