Practice_Exam_for_Exam2_CHE116

Practice_Exam_for_Exam2_CHE116 - CHE 116 Section M009, Exam...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE 116 Section M009, Exam #2, EXAM VERSION A Choose the one alternative that best completes the statement or answers the question. 1) In which of the following aqueous solutions would you expect PbCl 2 to have the lowest solubility? A) pure water B) 0.015 M PbNO 3 C) 0.020 M KCl D) 0.020 M BaCl 2 E) 0.015 M NaCl 2) The thermodynamic quantity that expresses the degree of disorder in a system is __________. A) enthalpy B) heat flow C) internal energy D) entropy E) bond energy 3) ΔS is positive for the reaction __________. A) CO 2 (g) CO 2 (s) B) BaF 2 (s) Ba 2 + (aq) + 2F - (aq) C) 2Hg (l) + O 2 (g) 2HgO (s) D) 2NO 2 (g) N 2 O 4 (g) E) 2H 2 (g) + O 2 (g) 2H 2 O (g) 4) Which one of the following pairs cannot be mixed together to form a buffer solution? A) NH 3 , NH 4 Cl B) KOH, HF C) NaC 2 H 3 O 2 , HCl (C 2 H 3 O 2 - = acetate) D) H 3 PO 4 , KH 2 PO 4 E) RbOH, HBr 5) Which one of the following statements is true about the equilibrium constant for a reaction if ΔG° for the reaction is negative? A) K = 1 B) K = 0 C) K < 1 D) K > 1 E) More information is needed. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6) A reaction that is spontaneous as written __________. A) is also spontaneous in the reverse direction B) is very rapid C) will proceed without outside intervention D) has an equilibrium position that lies far to the left E) is very slow 7) The first law of thermodynamics can be given as __________. A) ΔS = q rev /T at constant temperature B) ΔH° rxn = nΔH° f (products) - mΔH° f (reactants) C) the entropy of a pure crystalline substance at absolute zero is zero D) for any spontaneous process, the entropy of the universe increases E) ΔE = q + w 8) Based on the following information, which compound has the strongest intermolecular forces? Substance ΔH vap (kJ/mol) Argon (Ar) 6.3 Benzene (C 6 H 6 ) 31.0 Ethanol (C 2 H 5 OH) 39.3 Water (H 2 O) 40.8 Methane (CH 4 ) 9.2 A) Water B) Ethanol C) Benzene D) Argon E) Methane 2
Background image of page 2
intermolecular forces? A)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

Practice_Exam_for_Exam2_CHE116 - CHE 116 Section M009, Exam...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online