Chapter 5 Chem Jeopardy

Energy

200

This energy is stored chemical energy

Potential Energy

400

This energy is associated with the movement of an object

Kinetic Energy

600

What does w mean in the formula 𝚫E = q + w

Work (done to system)

800

What is the formula for the change in Internal Energy

𝚫E = E_final - E_initial

1000

What is the formula for Enthalpy Change at constant pressure

𝚫H = 𝚫E + P𝚫V

Calculating Enthalpies (You will need Appendix C)

200

SO₃(g) + H₂O(g) --> H₂SO₄(aq) (KJ/mol)

-272.28 (KJ/mol)

400

CaO(s) + H₂O(l) --> Ca(OH)₂(s) (KJ/mol)

-64.87 (KJ/mol)

600

3K₂O₂(s) + 3H₂O(l) --> 6KOH(aq) + O₂(g) (KJ/mol)

-549.51 (KJ/mol)

800

Mg(OH)₂(s) --> MgO(s) + H₂O(l) (KJ/mol)

37.1 KJ/mol

1000

N₂O₄(g) + 4H₂(g) --> N₂(g) + 4H₂O(g) (KJ/mol)

-976.94 (KJ/mol)

Specific Heats of Substances at 298 K

200

N_2(g) at 298 K (in J/g-K)

1.04 (J/g-K)

400

Al_(s) at 298 K (in J/g-K)

.90 (J/g-K)

600

Hg_(l) at 298 K (in J/g-K)

0.14 (J/g-K)

800

CH_4(g) at 298 K (in J/g-K)

2.20 (J/g-K)

1000

CaCO_3(s) at 298 K (in J/g-K)

0.82 (J/g-K)

Endothermic or Exothermic

200

Heat gained in a system

Endothermic 

400

Heat loss in a system

Exothermic

600

-902.09 KJ/mol

Exothermic

800

0.25 KJ/mol

Endothermic

1000

Knowing that CO₂ is -393.5 (KJ/mol) and CO is -110.5 (KJ/mol) is this reaction exothermic or endothermic... 2CO₂ --> O₂ + 2CO

Endothermic 

Random Chapter(s)

200

Balance the equation... Fe + Cl₂ --> FeCl₃

2Fe + 3Cl₂ --> 2FeCl₃

400

What is the 20th element of the Periodic Table of Elements

Calcium

600

Name 5 of the 7 SI Base Units

Kilogram, Meter, Second, Kelvin, Mole, Ampere, Candela

800

What is the 36th element of the Periodic Table of Elements 

Krypton

1000

C₂H₅NH₂ + O₂ --> CO₂ + H₂O + N₂

4C₂H₅NH₂ + 15O₂ --> 8CO₂ + 14H₂O + 2N₂