Chemistry Jeopardy

Equation Writing

100

Powdered barium oxide is mixed with water

BaO+H₂O->Ba(OH)₂

200

Solid ammonium carbonate is heated

(NH₄)₂CO₃->2 NH₃ + CO₂ + H₂O

300

Liquid phosphorus trichloride is poured into a large excess of water

PCl₃+3H₂O -> H₃PO₃+3H⁺+3Cl^-

400

Excess concentrated aqueous ammonia is added to a solution of nickel (II) bromide

4NH₃+Ni²⁺->Ni(NH₃)₄²⁺

500

Potassium permanganate solution is added to concentrated hydrochloric acid

2MnO₄^-+16H⁺+10Cl^- -> 2Mn²⁺+8H₂O+5Cl₂

Gases

100

The movement of gas particles through a small hole between containers

Effusion

200

The mathematical relationship between the pressure and volume of gases

inverse relationship

300

Temperature and pressure conditions in which gases are most ideal

high temperature, low pressure

400

The balloon with the largest mass after five identical balloons are filled to the same volume at 25 degrees C and 1.0 atm with the pure gases CO₂, O₂,He,N₂, and CH₄ (each balloon has only one type of gas)

CO₂

500

The balloon with more molecules of CO₂ between two identical balloons of pure CO₂ gas at the same temperature, one exposed to 2 atm of external pressure and the other to 1 atm

2 atm balloon

Atomic Structure

100

The atomic orbital associated with an angular momentum quantum number of 3

f

200

The ion with the largest radius between Be²⁺,Mg²⁺,Ca²⁺, and Sr²⁺

Sr²⁺

300

The element with the greater first ionization energy between phosphorus and sulfur

phosphorus

400

The wavelength (in nm) of the radiation associated with the transition of an electron of a Hydrogen atom from the sixth energy level to the second energy level (h=6.626 * 10^-34 Js, k=-2.178 * 10^-18 J, c=3.00 * 10^8 m/s)

411 nm

500

The minimum energy (kJ/mol) of the Cl-Cl bond assuming the longest wavelength of light energetic enough to break it is 495 nm (h=6.626*10^-34 Js, c=3.00*10^8 m/s)

242 kJ/mol

Thermochemistry

100

The enthalphy sign of an exothermic reaction

negative

200

The term for a physical state change of an element from a solid to a gas

sublimation

300

Temperature conditions in which the phase change of water from a liquid to a gas is spontaneous (high or low)

high

400

The work (J) done by the synthesis of one mole of NH₃ gas at 298 K (1 L * atm = 101.3 J)

2480 J

500

C₂H₅Cl(g)+Cl₂(g)<->C₂H₄Cl₂(g)+HCl(g)
ΔH° (kJ/mol) for the above reaction using this chart
Bond       Average Bond Dissociation Energy at 298 K
C-H                               414 kJ/mol
C-C                               374 kJ/mol
C-Cl                              377 kJ/mol
Cl-Cl                             243 kJ/mol
H-Cl                              431 kJ/mol

-151 kJ/mol

Molecular Geometry

100

The bond angles in CH₄ (degrees)

about 109 degrees

200

Delocalized electrons in molecules that cannot be completely expressed through a Lewis dot structure

resonance

300

Polarity of SF₄ (polar or nonpolar)

polar

400

Hybridization of valence orbitals of central atom in XeF₄

sp³d²

500

Number of pi bonds in H₂NCONH₂

1