Chemistry - Data Test

Effect of increasing Pressure

Shifts the equilibrium position of the gas-phase reaction towards the side with fewer moles

Effect of decreasing Pressure

Shifts the equilbirum position of the gas-phase reaction towards the side with more moles

Effect of increasing temperature in an exothermic reaction

Shifts the equilibrium position towards the reactants as there is an increase products

Effect of decreasing temperature in an exothermic reaction

Shifts the equilibrium position towards the products as there is an increase of reactants

Effect of increasing temperature in an endothermic reaction

Shifts the equilibrium position towards the reactants as there is an increasing of products

Effect of decreasing temperature in an endothermic reaction

Shifts the equilibrium position towards the products as there is an increase of reactants

Effect of increasing concentration

Shifts the equilibrium position towards the opposite side to counteract the change

Equilibrium Expression

Name of the products on the numerator

Name of the reactants on the denominator

Equilibrium Constant

Number of moles of products to the power of the constant over number of moles of the reactants to the power of the constant.

Effect of a Catalyst on Equilibrium

Only increases the reaction rate towards equilibrium. Doesn’t affect equilibrium position.

Reaction Quotient

Same as the equilibirum constant

Predicting yield from graphed information

• Pressure

• Temperature

• Concentration

Refer to the Graph

Calculating concentration of an unknown mole

Using formulas: n=cv and n=Mm/m

• First calculate number of moles for known

• Compare Rations by dividing unknown by known

• Calculate number moles of unknown

• Calculate concentration