Consider the following reversible read

2 NOBr _(g) 2 NO _(g) + Br_{2 (g)} H

Some NOBr is introduced into a container and the reaction is allowed to reach equilibrium.

Once the system has reached equilibrium, some disturbances have been made.

Identify the effect of each of the following disturbances (reaction shifts left, reaction shifts right or no change).

(a) Some NO is removed from the system reaction shifts leftreaction shifts rightno change

(b) The temperature is decreased reaction shifts leftreaction shifts rightno change

(c) The volume of the reaction vessel is decreased, increasing pressure reaction shifts leftreaction shifts rightno change

(d) A catalyst is added reaction shifts leftreaction shifts rightno change

(e) An inert gas (Neon) is added at constant volume

QUESTION 3

1. Consider the following reversible reaction: CH_4(g) + H₂O_(g) CO_(g) + 3H_2(g) H >0

   Which of the following lists disturbances that would favour the forward reaction?

   		a decrease in temperature and a decrease in volume
   		a increase in temperature and a decrease in volume
   		a decrease in temperature and a increase in volume
   		a increase in temperature and a increase in volume

1 points

QUESTION 4

1. Consider the following reversible reaction:

   2NO(g) + O₂(g) 2 NO₂(g) H

   Which of the following changes alone would cause the value of K_c for this reaction to increase?

   		Decreasing the temperature
   		Increasing the temperature
   		Decreasing the volume of the reaction vessel
   		Increasing the volume of the reaction vessel

QUESTION 1

Identfy whether the following statements are True(T) or False (F)

(i) Chemical equilibrium means that all chemical reactions have stopped True (T)False (F)

(ii) Equilibrium can only occur in a closed system True (T)False (F)

(iii) Addition of catalyst favours the products True (T)False (F)

(iv) Reactions with a lower activation energy reach equilibrium faster

QUESTION 2

1. What is the result of a decrease in temperature of a system that is at equilibrium?

   

   		The endothermic reaction is favoured and the reaction rate decreases
   		The endothermic reaction is favoured and the reaction rate increases
   		The exothermic reaction is favoured and the reaction rate decreases
   		The exothermic reaction is favoured and the reaction rate increases

QUESTION 6 Consider the following reversible reaction: C2H4(E) + H2(g) = C2H6(E) AH