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Samuels CHEM Chemical Equilibrium
Test Description: Chemistry Chemical Equilibrium
Instructions: Answer all questions to get your test result.
1) Chemical equilibrium is represented by ______.
A
double arrows
B
triple arrow
C
single arrow
D
equal sign
2) Any factor that changes the rate of either forward or reverse reactions.
A
inhibitor
B
solute
C
solvent
D
stress
3) This states that if a stress is applied to a system at equilibrium, the system will react to offset the stress.
A
Conservation Principle
B
Hund’s Rule
C
Le Chatelier’s Principle
D
Equilibrium Principle
4) 2 SO2 + O2 → 2 SO3 If more oxygen is added, which way will equilibrium shift?
A
both directions
B
left
C
no shift
D
right
5) 2 SO2 + O2 → 2 SO3 If the pressure is decreased, which way will equilibrium shift?
A
right
B
both directions
C
left
D
no shift
6) 2 H2 + O2 → 2 H2O If more H2O is added, which way will equilibrium shift?
A
right
B
both directions
C
left
D
no shift
7) 2 H2 + O2 → 2 H2O If a catalyst is added, which way will equilibrium shift?
A
no shift
B
left
C
both directions
D
right
8) In an exothermic reaction, will heat be found where?
A
both sides
B
no heat used
C
product side
D
reactant side
9) N2 + 2 O2 + heat → 2 NO2 If the temperature decreases, which way will equilibrium shift?
A
both directions
B
left
C
no shift
D
right
10) Heating sugar leading to char is an example of which of the following?
A
irreversible reaction
B
equilibrium
C
reversible reaction
D
stress
*select an answer for all questions
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