Chem 162 Worksheet 1 - recitation practices PDF

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Chemistry 162 Worksheet 1

Name _____________

pH = pKa + log ([A-]/[HA]) P = kH(c)

ΔG = ΔH – T∙ΔS

[A]t = -kt + [A]0

E°cell = (0.059V/n) log K W = –PV

Ptotal = XA(PA) + XB(PB) q = m(Cs)ΔT

Kp = Kc (RT) Δn

ΔG = ΔG° + RTlnQ

R = 8.314 J/K• mol

1/[A]t = kt + 1/[A]0

ln[A]t = -kt + ln[A]0

E = E° - (0.0592/n) log Q ΔG° = -RTlnK

ΔT = Kf(m)

Kw = 1.0 × 10–14 ΔG = -nFE°cell

*Meet and Greet: Introduce yourself, exchange email and/or cell number with at least 2 classmates 1) Which one of the following has a low density? A) gas B) liquid C) solid D) none of the above

E) all of the above

2) Place the following compounds in order of decreasing strength of intermolecular forces. I. CH3CH2CH2CH2CH2CH3 A) III > II > I

B) I > III > II

II. (CH3)3CCH3 C) I > II > III

III. (CH3)3CCH2CH3 D) II > III > I

E) III > I > II

3) Identify the compound with the highest dipole moment. A) CH3OCH3

B) CH3CH2CH3

C) CH3CHO

D) (CH3CH2)2O

4) Give the major force between ethanol (CH 3OH) and water. A)dipole-dipole B)dispersion C)hydrogen bonding D)ion-ion E)ion-dipole

5) Give the major force between acetone (CH 3C(O)CH3) and chloroform (CHCl3). A)dipole-dipole B)dispersion C)hydrogen bonding D)ion-ion E)ion-dipole

E) CH3CN

6) Define critical point. A)The temperature and pressure where a supercritical fluid begins to exist. B)The temperature and pressure where liquid, solid, and gas are equally stable and are in equilibrium. C)The temperature and pressure are equal. D)The temperature and pressure are not equal.

7) Based on the given figure, the boiling point of water under an external pressure of 0.493 atm is ________°C. A) 80

B) 40

C) 60

D) 70

E) 90

8) The enthalpy change for converting 10.0 g of ice at -50.0°C to water at 70.0°C is _____ kJ. The specific heats of ice, water, and steam are 2.09 J/gK, 4.18 J/gK, and 1.84 J/gK, respectively. For H 2O, ΔHfus = 6.01 kJ/mol, and ΔHvap = 40.67 kJ/mol. A) 12.28 B) 5.22 C) 3974 D) 7.31 E) 9.98...