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Equilibrium Constant (Kc or Keq)

Total questions: 8

Worksheet time: 8mins

Name
Class
Date
1.

What is the reaction/equation for this Kc expression

a)

2N2 + O2 ⇌ 2NO

b)

N2 + O2 ⇌ NO

c)

NO ⇌ 2NO

d)

N2 + O2 ⇌ 2NO

2.

What is the equation/reaction for this Kc expression?

a)

O3 ⇌ 3O2

b)

2O3 ⇌ 3O2

c)

2O3 ⇌ O2

d)

3O2 ⇌ 2O3

3.

If Kc is large that means the concentration of the __________ is high and therefore the concencentration of the __________ is low.

a)

reactants, products

b)

species, products

c)

products, reactants

d)

species, reactants

4.

If Kc is small that means the concentration of the __________ is high and therefore the concencentration of the __________ is low.

a)

reactants, products

b)

species, products

c)

products, reactants

d)

species, reactants

5.

The Kc expression for the reaction 2NH3 ⇌ N2 + 3H2

a)
b)
c)
d)
6.

Kc = ?

a)

products / reactants

b)

reactants /products

7.

The square brackets in a Kc expression represent ?

a)

concentration

b)

concentration in mol L-1

c)

concentration in g L-1

d)

the same as round brackets

8.

For the equilibrium: C + H2O ⇌ CO + H2 Kc = 1.6 x10-21

State the position of the equlibrium

a)

To the left

b)

To the right

c)

even