NEW
Font size
Worksheetschemical equlibrium
Total questions: 12
Worksheet time: 9mins
Which of the reaction has the same value of KC and KP?
A. N2 + 3H2 ⇋ 2NH3
B. H2 +I2 ⇋ 2HI
C. PCl5 ⇋ PCl3 + Cl2
D. 2SO2 + O2 ⇋ 2SO3
A
B
C
D
1. At 700 K, the equilibrium constant kp, for the reaction is
1.78 x 10-5 atm. What is the numerical value of Kc for this reaction at the same temperature?
A. 3.09 x 10-7
B. 9.03 x 10-7
C 5.05 x 10-5
C. 5.05 x 10-9
1. Which of the following is the equilibrium constant expression for the given reaction?
NH3(g) + H2O(l) → NH4+(aq) + OH- (aq)
A. Kc = [ NH3][ H2O]
[NH4+][OH-]
Kc = [NH4][ OH ]
[NH3][ H2O]
C. Kc = [NH4-][ OH-]
[NH3]
D. Kc = __[NH3]‑___
[NH4+][ OH-]
Based on MOT the O2+2 ion is a
A. Diamagnetic
B. Paramagnetic
C, Ferromagnetic
D. Pseudomagnetic
The main limitation of Valence bond theory (VBT) is.
A. it could not explain the valency of Be, B and C
B. it could not explain the formation of bond
C. it says all electrons take part in bonding
D. it explains only valence shell involve in bonding
Which of the following species has a tetrahedral shape according to valence shell electron pair repulsion (VSEPR) theory?
A. NH2-
B. H2O
C. NH3
D. NH4+
1. Which of the following is the correct ground state electronic configuration of Fe 3+ with
atomic number of26?
A. [Ar]3d3 4s2
B. [Ar]3d5
C. [Ar]3d6 4s2
D. [Ar]3d4 4s1
Nitrogen reacts with oxygen according to the equation given below. N2 + O2 ↔ 2NO ∆H = +170 kJ/mol. Which of the statements is TRUE at equilibrium?
The concentration of nitrogen present will change with time.
The forward and backward reaction are taking place at the same time.
The forward reaction releases heat energy.
There are more molecules on the left hand side of the equation than on the right.
Given that the decomposition of Ammonium Chloride (NH4Cl) is a reversible reaction producing Ammonia (NH3) and Hydrochloric acid gas (HCl) by the following reaction. Which one of the following pairs of conditions can increase the yield of reaction?
A
B
C
D
Consider the following reversible reaction. In a 3.00-liter container, the following amounts are found in equilibrium at 400 °C, 0.0420 mole N2, 0.516 mole H2 and 0.0357 mole NH3. Calculate the value of Kc?
N2(g) + 3H2(g) ↔ 2NH3(g)
0.202
1.99
4.94
16
Which of the following will be the value of Kp if the Kc is 26 for the reaction given below: PCl5 ⇌ PCl3 + Cl2 at 250°C?
0.46
0.57
0.61
0.83
Consider the reaction 2H2 (g )+ O2 (g)⇌ 2H2O (g). Which of the following CORRECTLY states the expression for the equilibrium constant for this reaction?
A
B
C
D
