Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Equlibrium
Test Description: Practice
Instructions: Answer all questions to get your test result.
1) The concentration of the reactants in an equilibrium equation...
A
increase then decrease
B
remain constant
C
decrease
D
increase
2) What reactions are used in determining the equilibrium constant
A
reverse
B
forward
C
neither forward nor reverse
D
both forward and reverse
3) When the pressure of a equilibrium system is increased, the equilibrium will shift
A
the side with the fewest moles
B
the side with the most moles
C
the equilibrium will not shift
D
Cannot determine from the information given
4) When the volume of a system is increased, the equilibrium will shift...
A
Cannot determine from the information given
B
the side with the fewest moles
C
the equilibrium will not shift
D
the side with the most moles
5) When the temperature of a system is increased, the equilibrium will shift...
A
Cannot determine from the information given
B
the side with the fewest moles
C
the equilibrium will not shift
D
the side with the most moles
6) When the concentration of a reactant is increased, the equilibrium will shift
A
cannot not determine without a reaction
B
will NOT shift
C
to the left
D
to the right
7) Which of the following are NOT included in the equilibrium expression?
A
aqueous
B
all are included
C
solids and liquds
D
gases
8) SO3(g) + H2O(g) ⇄ H2SO4(l) At equilibrium SO3 = 0.400M H2O = 0.480M H2SO4 = 0.600M Calculate the value of the equilibrium constant.
A
5.21
B
3.125
C
none of the above
D
0.192
9) At equilibrium a 2.0L flask contains: 0.075 mol of PCl5 0.050 mol of H2O 0.750 mol of HCl 0.500 mol POCl3 Calculate the Keq for the reaction: PCl5 (s) + H2O (g) ⇄ 2HCl (g) + POCl3 (g)
A
none of the above
B
3.75
C
1.41
D
0.711
10) Which of the following will change the value of the equilibrium constant?
A
varying the pressure of the vessle
B
adding other substances that do not react with anything
C
varying the volume of the vessle
D
changing the temperature
11) 2 NO2(g) ⇄ N2O4(g) In which directions will the equilibrium shift if more NO is added?
A
left
B
right
C
need more information to determine
D
equilibrium will not shift
12) 2 NO2(g) ⇄ N2O4(g) In which direction will the equilibrium shift if the volume of the system is decreased?
A
equilibrium will not shift
B
right
C
need more information to determine
D
left
13) 2 NO2(g) ⇄ N2O4(g) If the pressure of the system is decreased, in which direction will equilibrium shift?
A
left
B
right
C
equilibrium will not shift
D
cannot tell without more information
14) 2 NO2(g) ⇄ N2O4(g) + heat In which direction will the equilibrium shift if the temperature of the system is decreased?
A
right
B
cannot tell without more information
C
left
D
will not shift
15) A reaction vessel had 1.95 M CO and 1.25 M H2O. The equilibrium reaction is: CO + H2O ⇄ CO2 + H2. At equilibrium 0.85 M CO2 was present. What is the equilibrium constant for the reaction? (HINT: you will need to make an ice table)
A
0.61
B
3.17
C
none of the above are correct
D
1.64
16) When 0.50 mol of NOCl was put into a 1.0 L flask and allowed to reach equilibrium, 0.10 mol of Cl2 was found. What is Keq for this reaction? 2 NOCl(g) ⇄ 2 NO(g) + Cl2(g) (HINT: You will need an ice table to solve!)
A
0.044
B
22.5
C
2.55
D
0.067
17) Into a 2.00 L container is placed 1.00 mol of SO2(g) and 1.00 mol of O2(g). At equilibrium, SO3 = 0.150 M. Calculate the equilibrium constant for this reaction. 2 SO2(g) + O2(g) ⇄ 2 SO3(g) (HINT: you will need an ice table to solve)
A
0.0317
B
0.432
C
0.0029
D
31.5
18) N2 (g) + 3 H2 (g) ↔ 2 NH3 (g) : which of the following is NOT included in the equilibrium expression?
A
only the reactants
B
only N2 and NH3
C
only the products
D
all are included
19) Which of the following are included in the equilibrium expression for the following equilibrium reaction : AgBr (s) ↔ Ag+ (aq) + Br¯ (aq)
A
only AgBr and Ag
B
only the reactants
C
all are included
D
only the products
20) HNO2 (aq) ↔ H+ (aq) + NO2¯ (aq) Which of the following will have the same effect as increasing the concentration of H?
A
decreasing the HNO2 concentration
B
increaseing the HNO2 concentration
C
increasing the volume
D
decreasing the pressure
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?