1.10 Equilibrium constant

• Total pressure in a reaction is the sum of all the pressures of individual gases which is partial pressure.
• SO2Cl- decomposes into SO2 and Cl2 on the heating, it's a decomposition reaction.
• The equilibrium reaction vessel contains 263 kilo Pascals of chlorine, the total pressure of the vessel is 714 kilo Pascals.
• The partial pressure is calculated by multiplying the mole fraction by the total pressure.
• The gas equilibrium constant, KP, is used to calculate the equilibrium reactions involving gases, using partial pressures instead of concentration.
• The initial change in equilibrium for SO2 and CL2 is 3 moles SO2 and 0 moles CL2, as there is a lot of reactant and no products.
• At equilibrium, the change in moles is 1.75, indicating an increase of 1.75 moles SO2 and a decrease of 1.75 moles CL2.
• The mole fraction of SO2 and CL2 is calculated by dividing the number of moles of the reactant by the sum of all the equilibrium moles.
• The KP expression can be used for reactions with multiple reactants and products.
• KP expression is the products divided by reactants as products on the top divided by reactants, where the partial pressure of G is the number of moles.
• If the temperature change causes an equilibrium to shift right, KP will increase.
• The KP expression is valid only at one temperature.
• The KP expression can be used for reactions with different temperatures.
• If temperature change causes equilibrium to shift left, KP will decrease.
• The KP expression can be used for reactions with different states of matter, such as gases, liquids, and solids.
• The KP expression can be used for any reaction with equilibrium constants.
• and we've got the initial moles of each gas so we've got three moles of so2 CL 2 and then we've got the total moles of gas which is 1.75 moles of chlorine and then we've got the total pressure which is 714 kilo Pascal's so that's the initial information that we need to work out the partial pressure of so2 CL 2 so the first thing we need to do is work out the mole fraction of so2 CL 2 and the mole fraction of so2 CL 2 is the number of moles of gas divided by the total number of moles of gas in the mixture and that's the first equation that we need to use in this problem so the mole fraction of