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WorksheetsThermodynamics, Kinetics, and Equilibrium
Total questions: 20
Worksheet time: 13mins
Which of the following is correct about a closed system?
Both matter and energy can be exchanged
Only energy can be exchanged, not matter
Only matter can be exchanged
Both matter and energy cannot be exchanged
State "True" or "False" (Yes, the first letter needs to be capitalized.): Thermodynamic potentials are quantitative measures of the stored energy in a system.
(a)
The measurement of energy in a thermodynamic system is _____
Entropy
None of the above
Enthalpy
Equilibrium
At constant temperature and pressure, the direction of any chemical reaction is the one where _____ decreases.
Entropy
Enthalpy
Gibbs free energy
All of the above
Bonus question: Who is the most beautiful?
Shan
Steve
Vicky
Ms. Parker
Entropy decreases during...
Crystallization of sucrose from solution
Rusting of iron
Melting of ice
Vaporization
Which side of the reaction will the equilibrium shift toward if pressure increase in the reaction "N2 (g) + 3H2 (g) ↔ 2NH3 (g) + Heat"?
⬅️
⬆️
➡️
🔄
constant
Which of the following are NOT true?
When pressure increases, equilibrium shifts towards the side with fewer moles.
When pressure decreases, equilibrium shifts towards the side with fewer moles.
When pressure decreases, equilibrium shifts towards the side with more moles.
When pressure decreases, equilibrium shifts towards the side with fewer moles.
“Condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.” State the term this statement is defining (all in lower case).
(a)
Just a fun riddle:: Why do people love gold?
Which of the following affects a thermodynamic system?
Changes in pressure
Changes in volume
Changes in internal energy
All of the above
2H2(g) + O2(g) → 2H2O(l), at temperature 300K, what is the change of entropy? (Standard entropies: H2(g)=126.6, O2(g)=201.20, H2O(l)=68.0 Jk-1mol-1)
-318.4 Jk-1mol-1
31.84 Jk-1mol-1
318.4 Jk-1mol-1
3184 Jk-1mol-1
Which of the following statement is correct?
For an endothermic process, H is negative.
For an exothermic reaction, H is negative.
For an endothermic reaction, H is sometimes positive and sometimes negative.
For exothermic reaction, H is positive.
Which of the following is correct about an open system?
Both matter and energy can be exchanged
Only energy can be exchanged, not matter
Only matter can be exchanged
Both matter and energy cannot be exchanged
Bonus Question: Which of the following is a FACT? (can have 1 or more correct answers)
Steve is a boy who is in grade 10 chemistry honors.
Vicky likes to use an up-side-down name when playing Quizizz.
Shan is in the Western house.
Our grades for this unit's (unit 3) summative test are not out yet.
When the system A + B ⇌ C + D is at equilibrium,
the forward reaction has stopped.
both the forward and the reverse reactions have stopped.
the reverse reaction has stopped.
neither the forward nor the reverse reaction has stopped.
Kc = 0.040 for the system below at 450oC: PCl5(g) PCl3(g) + Cl2(g), Evaluate Kp for the reaction at 450oC.
0.40
0.0064
2.4
0.052
6.7 x 10-4
For a specific reaction, which of the following statements can be made about K, the equilibrium constant?
It always remains the same under different reaction conditions.
It changes with changes in the temperature.
It increases if the concentration of one of the products is increased.
It may be changed by the addition of a catalyst.
Which of the following affect(s) the rate of reaction?
volume
surface area
catalyst
concentration
temperature
Just a fun riddle: Why did the white bear dissolve in water?
