Chapter 11 - Equilibrium II Flashcards
(10 cards)
What is partial pressure?
The pressure exerted by a particular gas in a mixture in a closed system
What is the formula for partial pressure?
Mole fraction x Total Pressure
What is a mole fraction of gas?
No. of moles of a particular gas in the mixture / Total no. of moles of all gases in the mixture
What is Total Pressure?
Sum of all partial pressures
What 3 units usually represent partial pressure?
1) Pa
2) kPa
3) atm
–> Never change the given units
What is the equilibrium constant for partial pressure?
Kp
What is the effect of increasing temperature on Kp for an endothermic reaction?
- Equilibrium shifts to the right
- Partial pressure of products increases
- So, Kp increases
What will be the kinetic effect of increasing the temperature for any reaction?
- Rate of reaction will increase
- Many more particles have energy greater than/equal to the activation energy
- More successful collisions per second
What will be the kinetic effect of increasing the pressure for any reaction?
- Rate of reaction will increase
- More particles occupying the same volume of space
- More successful collisions per second
When calculating Kc/Kp for heterogeneous reactions, what do you ensure is omitted from the equation?
Solids
