5.1.2 Equilibria

Question 1

what is partial pressure

Answer 1

• the pressure gas would exert if it alone occupied the volume occupied by the whole mixture
• pressure caused by a basis proportional to the number of particles of the gas

Question 2

give the partial pressure equation

Answer 2

Pg (partial pressure of gas)/Pt(total pressure)=ng(mols of gas)/Nt(total mols of gas)

Question 3

describe the effect of increasing temperature on Kc and Kp

Answer 3

• causes the endothermic reaction to be favoured

- Kp increases id delta H is positive and decreases if delta H is negative

Question 4

describe the effect of decreasing temperature on Kc and Kp

Answer 4

• causes the exothermic reaction to be favoured

- Kp decreases if delta H is positive and increases if delta H is negative

Question 5

what is the effect of concentration and pressure on Kp

Answer 5

equilibrium shifts but Kp does not change

Question 6

what is the effect of catalysts on Kp and Kc

Answer 6

no effect

Question 7

what is a heterogeneous system

Answer 7

where one or more substance are in a different state to the others in the reaction

Question 8

what is a homogeneous system

Answer 8

where all substances are in the same state