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Chemistry

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Laurie Hammes

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Cards in this guide (8)
If the temperature of a reaction increases what happens to the value of the equilibruim constant

Equilibrium constant changes when temperature changes. For an endothermic reaction, the equilibrium constant increases with temperature while for an exothermic reaction equilibrium constant decreases with increase in temperature. Equilibrium constants are only affected by change in temperature.

Which describes two phases in dynamic equilibrium

the total number of molecules in each phase stays constant

How would a drop in pressure affect a gaseous system at equillibrium

the reaction would shift to favor the side with the most moles of gas

How are oh and poh related

poh=14-ph

What is Kb for CH3NH2(aq) H2O(l) CH3NH3 (aq) OH-(aq)

Kb = [CH3NH3 +] [OH-] / [CH3NH2]

What is the pH of a solution (APEX)

A measure of the acidity of the solution

How does the rate law show how concentration changes change the rate of reaction

as concentration increase the faster the rate of reaction and vice versa

What is Keq for the reaction N2 plus 3H2 2NH3 if the equilibruim concentractions are NH3 3 M N2 1 M and H2 2 M.

Keq = 1.125

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