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Template by Becky Afghani, 2007
Jeopardy
Honors Chemistry
ThermochemistryChange in Enthalpy, Calorimetry, Endothermic vs.
Exothermic, Calculations, and Definitions
GAME BOARDDIRECTIONS
Template by Becky Afghani, 2007
Directions
GAME BOARD
The Game Board Slide: Click on a dollar amount to see the question. After a question has been attempted the dollar amount will disappear.
The Question Slides: Use the space bar or right arrow on the keyboard to see the answer. Click the Game Board button to return to the game board.
Start with the game board. When a student or team selects a category and a dollar amount, click it with the mouse. The question will appear. Use the right arrow or space bar on the keyboard to see the answer. Click the game board button to return to the game board. Repeat. Press the Esc button on the keyboard to stop playing.
Template by Becky Afghani, 2007DIRECTIONS TITLE PAGE
Change in Enthalpy
Calorimetry CalculationsEndo vs.
ExoDefinitions
$100 $100 $100$100 $100
$200 $200 $200$200 $200
$300 $300 $300$300 $300
$400 $400 $400$400 $400
$500 $500 $500$500 $500
Thermochemistry Jeopardy
Final Jeopardy
Template by Becky Afghani, 2007
Change in Enthalpy$100
What must be held constant in a chemical reaction in order for the
change in enthalpy (∆H) to equal the amount of heat (q)
generated/released ?
Pressure.
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Template by Becky Afghani, 2007
Change in Enthalpy$200
Write a formation equation for glucose, C6H12O6(s). Be sure to
include the value of ∆Hf°
6 Cgraphite(s) + 6 H2(g) + 3 O2(g) C6H12O6(s)
∆Hf°= -1273.02 kJ/mol
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Template by Becky Afghani, 2007
Change in Enthalpy$300
Calculate the standard enthalpy change for the following reaction:
3 Fe2O3(s) + CO(g) 2 Fe3O4(s) + CO2(g)
∆Hrxn°= -50.72 kJ
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Template by Becky Afghani, 2007
Change in Enthalpy$400
Find ∆Hf° for C4H4S(l) using the information given below:
C4H4S(l) + 6 O2(g) 4 CO2(g) + SO2(g) + 2 H2O(l)
∆Hrxn° = -2523 kJ
∆Hf° for C4H4S(l) = +80.44 kJ/mol
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Template by Becky Afghani, 2007
Change in Enthalpy$500
Given the following equations and ∆H values, determine the heat of the following reaction:
B2H6(g) + 6 Cl2(g) 2 BCl3(g) + 6 HCl(g) a. BCl3(g) + 3 H2O(l) H3BO3(g) + 3 HCl(g) ∆H= -112.5 kJ
b. B2H6(g) + 6 H2O(l) 2 H3BO3(g) + 6 H2(g) ∆H= -493.4 kJ
c. ½ H2(g) + ½ Cl2(g) HCl(g) ∆H= -92.3 kJ
∆Hrxn= -1376 kJ
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Calorimetry$100
What two conditions are needed in order for a reaction to be
considered standard?
298K/25ºC and atmospheric pressure
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Template by Becky Afghani, 2007
Calorimetry$200
How much heat is needed to raise 14 g of a metal with a specific
heat of 0.105 J/g. C from 24.0 C ⁰ ⁰to 98.3 C?⁰
109.22 Joules
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Calorimetry$300
1219 joules of heat raise the temperature of 250 g of metal by 64 C. What is the specific heat ⁰
of the metal?
0.076 J/g.⁰CGAME BOARD
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Calorimetry$400
If a 28g sample of a metal is heated to 93 C and then dropped into 25g of ⁰water in a calorimeter, what is the
specific heat of the metal if the temperature of the water rose from
20.4 C to 23.9 C?⁰ ⁰
0.19J/g.⁰CGAME BOARD
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Calorimetry$500
175 g of aluminum at 98 C is dropped ⁰into an insulated cup that contains
50mL of cold water at 16 C. ⁰Determine the temperature of thermal
equilibrium if the specific heat of aluminum is 0.90J/gx C⁰
51.22⁰CGAME BOARD
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Endo vs. Exo$100
Is the following reaction endothermic or exothermic?
2NaHCO3 + 129kJ Na2CO3 + H2O + CO2
Endothermic
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Endo vs. Exo$200
Is the following reaction endothermic or exothermic?
Fe2O3 + 3CO 2Fe + 3CO2
∆H = -26.3kJ
ExothermicGAME BOARD
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Endo vs. Exo$300
A person performs a chemical reaction inside a zip-lock bag.
When the reaction is finished, the bag feels warm to the touch.
Exothermic
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Endo vs. Exo$400
In an exothermic reaction, is the enthalpy lower for the reactants
or the products?
Lower= Products
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Enthalpy$500
Draw an enthalpy diagram for the following reaction:
2 Al2O3(s) 4 Al(s) + 3 O2(g)
∆H = + 3352 kJ
Up-Hill Diagram
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Template by Becky Afghani, 2007
Calculations$100
What is the SI Unit for heat and energy?
Joule
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Calculations$200
Percent Daily Values on Nutrition Fact labels are based on a 2,000 Calorie diet. What would this be
in joules?
8,368,000 or 8.368x106 joules
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Calculations$300
A given system does 37kJ of work upon its surroundings and then releases 61kJ of heat. Calculate
the internal energy, ∆E, of the system.
-98 kJGAME BOARD
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Calculations$400
2Na + Cl2 2NaCl ∆H= -190kJ
If 2.67 moles of sodium were used in this reaction, how much heat
(in kJ) would be produced?
-253.65 kJ
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Calculations$500
S + O2 SO2 ∆H= -297kJ
If 501.19 kJ were released in the above reaction, how many grams
of oxygen were used?
54 gGAME BOARD
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Definitions$100
The portion of the universe that we single out for study.
System
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Definitions$200
The energy that an object possesses by virtue of its
motion.
Kinetic Energy
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Definitions$300
The movement of an object against some force.
Work
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Definitions$400
The law which states that energy is conserved in any process.
First Law of Thermodynamics
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Definitions$500
The heat evolved in a given process can be expressed as the sum of the
heats of several processes that, when added, yield the process of
interest.
Hess’s Law
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