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WorksheetsChemical Equilibrium
Total questions: 10
Worksheet time: 5mins
Consider the reaction:
4NH3 (aq) + 7O2 (G) => 4NO2 (g) + 6H20 (L)
the equilibrium constant,Kc for the reaction should be written as?
[NO2}4
[NH3]4[O2]7
[NO2][H2O]
[NO2]4[H2O]6
[NO2]4[H2O]7
When the system H2(g)+Br2(g) is in equilibrium at 550 K at 1.0 atm pressure,the value of the equilibrium constant,KP is 10.What is the value of KP at a pressure of 2.0 atm at the same temperature
10
20
30
40
Which of the following equilibrium equation would be shifted toward the right when the pressure is raised at constant temperature
PCl5 => PCl3 + Cl2
O2 + 4F2 => F4 + 2F2O
NH4HS => NH3 + H2S
3Fe + 4H2O=> F3O4 + 4h2
An equilibrium is represented by the following equation:
2SO2 + O2 = 2SO3 H=-yKj mol-1
Which of the following changes would effect the value of equilibrium constant,Kp and the proportion of sulfur trioxide present at equilibrium?
Reducing the temperature
Adding the catalyst
Increasing the pressure
Increasing the mass of oxygen
Which statement describe a system at equilibrium?
Kforward = Kreverse
Amount of reactant and product are equal
When the reactant used up,the reaction stop.
The rate of forward reaction equal the rate of reverse reaction
For the reaction
2SO3 => 2SO2 + O2
If the partial pressure of SO3 and SO2 at equilibrium are
1/4 P and 1/8 P,respectively,what is the value of Kp?
1/64 P
10/64 P2
1/32 P
1/8 P
Hydrazine is produced from it elements as follow:
N2 + 2H2 => N2H4 H=+ve kjmol-1
Addition of catalyst
Decrease in the pressure of the system
Increase in the temperature of the system
Increase in the value of the reaction vessel
Sodium hydrogen carbonates decomposes at 1000C according to equation below:
2NaHCO3 => Na2CO3 + H2O + CO2
If the value of Kp is 0.231,calculate he total gas pressure (atm) at equilibrium.
0.691
0,434
0.431
0.132
At 250C,Kp=7.13 atm-1 for the reaction:
2NO2 => N2O4\
At equilibrium the partial pressure of NO2 in a container is 0.15 atm. Calculate the partial pressure of N2H4 in the mixture.
0.16 atm
1 atm
0.99 atm
0.69 atm
Calculate the value of Kp and Kc for the above reaction at 25oC,given that the vapour pressure of water at 250C is 23.8 torr
H2O=>H2O
2.33 X 10-3
2.99 X 10-4
1.23 X10-3
1.28 X 10-3
