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Chapter 14 Equilibrium

Authored by Hannah Pollard

Chemistry

12th Grade

NGSS covered

Used 16+ times

Chapter 14 Equilibrium
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13 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At elevated temperatures ammonium carbonate, NH2COONH4, is in equilibrium with NH3 and CO2 according to the equation;

NH2COONH4(s) ↔ 2 NH3(g) + CO2(g)

What is the equilibrium expression for this reaction?

K = 2 [NH3][CO2]

[NH2COONH4]

K = [NH3]2[CO2]

[NH2COONH4]

K = 2 [NH3][CO2]

K = [NH3]2[CO2]

Tags

NGSS.HS-PS1-6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equilibrium-constant expression for 
CO2(g) + H2(g) ↔ CO(g) + H2O(l)

Kc= [CO][H2O] / [CO2][H2]  
Kc= [CO2][H2] / [CO]
Kc= [CO2][H2] / [CO][H2O]
Kc= [CO] / [CO2][H2]  

Tags

NGSS.HS-PS1-6

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

For the following reaction: H2(g) + Cl2 (g) ↔ 2HCl(g), calculate the concentration of HCl when Keq= 2.3x10-5, [H2]= 0.0056mol, [Cl2]= 0.0048mol.

6.2 x 10-10 M

2.5 x 10-5 M

1.1 M

1.2 M

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Consider the following reaction. What would be the equilibrium constant expression?

4Br2(g) + CH4(g) ↔ 4HBr(g) + CBr4(g)

[Br2]4 [CH4]

[HBr]4 [CBr4]

[HBr]4 [CBr4]

[Br2]4 [CH4]

[HBr ]

[Br2]4 [CH4]

[HBr]4 [CBr4]

[Br2]4 [CH4]4

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What kind of equilibrium does the reaction below show?
CaCO3 (s) ↔ CaO (s) + CO2 (g)

Heterogeneous equilibrium, all the reactants and products are in the same physical state.
Homogeneous equilibrium, all the reactants and products are in the same physical state.
Heterogeneous equilibrium, the reactants and products are present in more than one physical state
Homogeneous equilibrium, the reactants and products are present in more than one physical state

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Define chemical equilibrium.

A reaction is reversible.
The concentration of the reactants is equal to the concentration of the products.
The rate of a forward reaction is equal to the rate of the reverse reaction.
The reaction stops and no further change in concentration occurs.

Tags

NGSS.HS-PS1-6

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Consider the following reaction :    
SO2 (g) +  NO2 (g) 
 SO3 (g) + NO (g)  
had reached a state of equilibrium, was found to contain   0.40 M SO3 , 0.30 M NO, 0.15 M NO2 , and 0.20 M SO2. Calculate the equilibrium constant  for this reaction.

4
.42
.25
1

Tags

NGSS.HS-PS1-6

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