Chemical Equilibrium

Question 1

Dynamic state

Answer 1

reactants and products are interconverted continually

Question 2

In dynamic state, _______ rate = _______ rate

Answer 2

Forward rate = Reverse rate

Question 3

The law of mass action for the reaction

aA + bB cC + dD

Answer 3

K (equilibrium constant) = [C]c [D]d / [A]a [B]b

Question 4

A pure ________ or ________ is never included in the equilibrium expression.

Answer 4

liquid; solid

Question 5

For a gas-phase reaction, the reactants and products can be described in terms of their partial pressures and the equilibrium constant is called Kp:

Answer 5

Kp = K(RT) ^ Δn

Question 6

What does Δn represent?

Answer 6

The sums of the coefficients of the gaseous products minus the sum of the coefficients of the gaseous reactants

Question 7

When a reaction takes place in a closed system, it reaches a condition where the concentrations of the reactants and products remain __________ over time.

Answer 7

constant