Welcome to your Grade 11 Chemistry chapter 5
After carefully reading the following 30 questions, choose the correct answer.
1.
A system is said to be at equilibrium when:
2.
Which of the following is a characteristic of dynamic equilibrium?
3.
For the general reaction aA+bB⇌mM+nN, what is the expression for the equilibrium constant Kc?
4.
What does a very large value of Kc (Kc≫1) indicate about a reaction at equilibrium?
5.
According to Le Chatelier's Principle, if a system at equilibrium is disturbed by a change in concentration, the system will:
6.
In the reaction N2(g)+3H2(g)⇌2NH3(g), what is the effect of increasing the pressure?
7.
For an endothermic reaction, how does increasing the temperature affect the equilibrium constant Kc?
8.
Which of the following substances are NOT included in the equilibrium constant expression for a heterogeneous equilibrium?
9.
The relationship between Kp and Kc is given by the equation:
10.
What happens to the equilibrium position if a catalyst is added to the system?
11.
A reaction is said to be irreversible if:
12.
What is the Reaction Quotient (Qc)?
13.
If Qc<Kc, in which direction will the reaction proceed to reach equilibrium?
14.
Which industry uses the Haber Process to synthesize ammonia?
15.
In the Contact Process for sulfuric acid production, what is the equilibrium step?
16.
What effect does adding an inert gas at constant volume have on the equilibrium of a gas-phase reaction?
17.
If a reaction has Δn=0, what is the relationship between Kp and Kc?
18.
The Law of Mass Action states that the rate of a chemical reaction is proportional to:
19.
For the reaction H2(g)+I2(g)⇌2HI(g), if Kc is 50, what is Kc for the reverse reaction?
20.
Which condition is necessary for a chemical system to reach equilibrium?
21.
If the concentration of a product is increased in a system at equilibrium, the system will shift:
22.
In an exothermic equilibrium reaction, decreasing the temperature will:
23.
What is the unit of Kc for the reaction H2(g)+I2(g)⇌2HI(g)?
24.
Equilibrium constant Kc values are dependent on:
25.
For a reaction with Δn being negative, increasing the volume of the container will:
26.
Which of the following is true for a reaction where Qc=Kc?
27.
The equilibrium between N2O4 (colorless) and NO2 (brown) is:
28.
If a reaction is written in reverse, the new equilibrium constant K′ is:
29.
Catalysts do not change the position of equilibrium because:
30.
In the decomposition of CaCO3(s)⇌CaO(s)+CO2(g), Kp is equal to:
