Equilibrium

Question 1

mention temp increase or decrease –> how effect eqm position

Answer 1

must mention reaction is exothermic or endothermic

Question 2

le chatelier’s principle

Answer 2

Equilibrium position will shift to a direction in order to oppose the change in concentration of reactant
(for concentration cases)

when a system at equilibrium is disturbed by a change in conditions, the equilibrium position will shift to the direction which tends to reduce the disturbance

Question 3

explaining the shift of equlibrium position

Answer 3

better need to mention by Le Chatelier’s principle

Question 4

define dynamic equilibrium

Answer 4

forward reaction rate = backward reaction rate =/= 0
overall properties of the system are constant(eg. colour, density, pressure and the concentration of reactants and products do not change at equilibrium)

Question 5

how can we make sure the reaction mixture under study is ar an equilibrium state

Answer 5

by taking small samples out of the mixture at different times for concentration analysis. When the same result is obtained from successive analyses, it can be assumed that there is no further change in composition of the mixture, ie. an equilibrium state is reached

Question 6

why an increase in concentration of reactant will shift the equilibrium position to the products side

Answer 6

an increase in concentration of a reactant increases the rate of the forward reaction, but has no immediate effect on the rate of the backward reaction.
Thus the rate of forward reaction becomes greater than that of the backward reaction and the system is no longer in equilibrium

Question 7

what is the color of N2O4

Answer 7

brown