partial pressure and Kp
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calculate partial pressure
mole fraction * total pressure
calculate mole fraction
number of moles of a gas / total number of moles of all gases
what is the unit of Kp?
kPa
what does a small or large Kp mean?
large = greater amount of product smaller = equilibrium favours the reactants
what factors effect and dont effect Kp and Kc?
temp changes both pressure, concentration and catalysts = no impact
what is the impact of temperature on Kc and Kp and equilibrium?
both of them will change • if the reaction is exothermic in the forward direction, if temp increases the reaction will shift to oppose the chnage and move in the backwards endothermic direction. • the position of equilibrium shifts left. • the value of kp gets smaller as there are fewer products
what is the impact of pressure on position of equilibriym and Kp
• the position of equilibrium will change if pressure is altered but he value of Kp stays constant as Kp only varies with temp. • equilibrium shifts to the side with fewer moles