WorksheetsGen Chem 2 Final Recitation Review
Total questions: 21
Worksheet time: 43mins
What type of reaction is the conversion of an alkene to an alkane?
hydrogenation
dehydrogenation
methasis
acid/base
Draw the skeletal structure for propanal
Name this compound:
4,5-dichloro-3,3-dimethyl heptane
3,4-dichloro-5,5-dimethyl hexane
4,5-chloro-3-methyl heptane
3,4-dichloro-5,5-dimethyl heptane
What is the predominant IMF present in butanol?
London dispersion
Hydrogen bonding
dipole-dipole
no IMFs
Name this ester:
propyl ethyl ester
propyl ethanoate
ethyl propanoate
pentanoic ester
What are the most important intermolecular attractions in a solution of oxygen gas and bromine liquid?
dipole-dipole
London dispersion
hydrogen bonding
ion-dipole
Which of these is an electrolyte?
glucose
methanol
sucrose
sodium chloride
What is the freezing point of a solution of 6.2g MgCl2 in 730 g H2O? Remember ΔT = i Kf m; Kf = 1.86 °C/m
-0.1659 °C
-0.50 °C
-0.3318 °C
-0.0004978 °C
What's the mole fraction if HNO3 in a solution of 68% HNO3 in H2O?
0.622
0.378
2.855
1.079
If ΔH° = 465 kJ/mol and ΔS° = 552 J/mol K, below what temperature will the reaction occur spontaneously? Remember ΔG° = ΔH° - T ΔS°
0.842 K
842.4 K
369 K
0.438 K
What is the rate law for this equation:
rate = k [CO2] [OH-]
rate = k [HCO3-] [CO2] [OH-]
rate = k [HCO3-] / [CO2] [OH-]
rate = k [HCO3-]
Find the activation energy if T1 = 555 K, T2 = 700K, K1 = 6.23 x 10-7 M-1s-1, K2 = 2.01 x 10-3 M-1s-1
-180 J/mol
180 kJ/mol
-180 kJ/mol
180 J/mol
What are the signs of ΔS°, ΔH°, and ΔG° for the sublimation of dry ice at 25°C?
+, +, +
+, +, -
-, -, -
-, -, +
What is the rate constant for the decomposition of ibuprofen in water if the half life is 24 days at 25°C? Assume first order kinetics where t1/2 = (1/k) ln 2
0.0125 days-1
0.24 days-1
0.029 days-1
16.63 days-1
Which of the following are ways to determine if a proposed mechanism is plausible?
the sum of the elementary steps must yield the overall equation
the derived rate law for the proposed mechanism must be consistent with the experimentally determined rate law
there must be intermediates present in each reaction
elementary steps should be uni- or bi- molecular
What is [Cl2] if Kc = 7.1, [BrCl] = 0.014 M, and [Br2] = 0.0023 M?
0.015 M
0.0023 M
0.86 M
0.012 M
What is the pH of a solution of [OH-] = 3.16 x 10-10 M?
9.5
4.5
1.15
12.85
Which direction would the reaction shift if (a) Chlorine gas was added, (b), pressure was increased, and (c) HCl was removed?
(a) left (b) right (c) lelft
(a) right (b) right (c) left
(a) left (b) right (c) stay the same
(a) stay the same (b) left (c) left
What could be done to increase nitrogen gas concentration?
add H2O
remove H2O
increase pressure
add H2
Calculate the concentration of PCl5 of 0.03 mol PCl5 is added to 3L water at 300K (use an ice box!)
0.0074 M
0.0026 M
0.0174 M
0.0385 M
Label the acid, base, conjugate acid, and conjugate base (answers L to R)
base, acid, conjugate base, conjugate acid
acid, base, conjugate acid, conjugate base
acid, base, conjugate base, conjugate acid
base, acid, conjugate acid, conjugate base
