Module 4
The intermolecular force in all molecules.
What is London Dispersion Forces
Which of the following aqueous solutions has the highest boiling point? K b for water is 0.52°C/m.
A) 0.3 m potassium chloride B) 0.4 m hydrofluoric acid C) 0.2 m sodium sulfate
D) 0.2 m aluminum nitrate E) Cannot be determined
What is D?
Write the general rate expression and general rate law. (Entirely!)
Check white board
What type of school was UTEP originated as?
What is the State School of Mines and Metallurgy?
Which one of the following substances should exhibit hydrogen bonding in the liquid state?
A) HBr
B) CH4
C) PH3
D) NH3
E) None of the above
What is D?
What is the osmotic pressure of a solution that contains 13.7 g of propyl alcohol (C3H7OH) dissolved in enough water to make 500. mL of solution at 27°C?
A) 0.014 atm
B) 0.037 atm
C) 0.456 atm
D) 0.01 atm
E) 11.2 atm
What is E?
For the reaction 3A → B, the rate law is D[B]/Dt = k[A]2. What are the units of the rate constant where time is measured in seconds?
What is 1/M*s or M-1s-1
Who is this player?
Bonus Points (200) if you name 2 of the clubs he's played at
Who is Lionel Messi?
Which of the following would be expected to have the highest vapor pressure at room temperature?
benzene, bp = 80°C
propanol, bp = 97 °C
ethanol, bp = 78°C
water, bp = 100°C
methanol, bp = 65°C
What is E?
The vapor pressure of water at 20°C is 17.5 mmHg. What is the vapor pressure of water at 20°C above a solution prepared from 200.0 g of sucrose (C12H22O11 ) and 350.0 g water?
What is 17.0 mmHg
Which of the following is the rate law (rate equation) for this reaction?
(Show #2).
r = k[NO]2[Cl]
Name 3 other UT schools.
UT Austin, UT Arlington, UT Dallas, UT Permian Basin, UT Rio Grande Valley, UT San Antonio
Sublimation of substance X is likely to occur at:
A) about 30°C B) about 70°C C) about 20°C D) above 80°C E) about 28°C
What is C?
A 9.50 % by mass solution of acetone (C3H6O) in water has a density of 0.9849 g/mL at 20°C. What is the molarity of this solution?
1.62M
For the hypothetical reaction A + 3B 🡪 2C, the rate of appearance of C is given by the expression (Δ[C]/ Δt). The quantity (Δ [C]/ Δt) may also be expressed as
A) Δ [C]/ Δt = Δ [A]/ Δt
B) Δ [C]/ Δt = – (2/3) Δ [B]/ Δt
C) Δ [C]/ Δt = – (3/2) Δ [B]/ Δt
D) Δ [C]/ Δt = – (1/2) Δ [A]/ Δt
E) none of the above
What is C?
What is the name of the basketball coach who led UTEP to win the NCAA in 1966?
Who is Don Haskins?
Calculate the amount of heat needed to melt 2.00 kg of iron at its melting point (1,809 K), given that ΔH fus = 13.80 kJ/mol.
What is 494? What are the units?
A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at –2.34°C. Calculate the molar mass (in units of g/mol) of the solute. Kf of water is 1.86°C/m.
What is 174.6 g/mol
The rate law for this reaction must be:
(Show #3)
r = k[S2O8-2][I-]
Name every single student in the workshop.
Demonstrate.