Final Exam: Exam 1 Ques.
What is the name given to a solution that contains the maximum amount of solute that will dissolve in a 11) _________ solvent at a specific temperature? A) saturated B) unsaturated C) solvent D) solute E) supersaturated
A) saturated
What is the quantitative relationship between gas solubility and pressure? A) entropy B) Henry's law C) enthalpy D) Boyle's law E) Avogadro's law
B) Henry's law
The number of atoms in a body-centered cubic unit cell is A) 1. B) 2. C) 3. D) 4. E) 8.
B. 2
From the following list of aqueous solutions and water, select the one with the highest boiling point. A) 1.0 M KNO3 B) 0.75 M NaCl C) 0.75 M CuCl2 D) 2.0 M C12H22O11 (sucrose) E) pure water
C) 0.75 M CuCl2
What is defined as the difference between the freezing point of a pure solvent and the freezing point of the solution? A) freezing point B) freezing-point elevation C) freezing-point depression D) subzero freezing E) supercooling
C) freezing-point depression
Which of the following properties indicates the presence of strong intermolecular forces in a liquid? A. A low heat vaporization B. A low critical temp C. a low vapor pressure D. a low boiling point E. a low melting point
C. A low vapor pressure
What is defined as the number of atoms surrounding an atom in a crystal lattice and indicates how tightly the atoms are packed together? A) the unit cell B) the radius of the cubic cell C) the coordination number D) the area of the cubic cell E) the atoms themselves
C. The coordination number
Which has the highest surface tension at room temperature? Ch4, CF4, CCl4, CBr4, Cl4
Cl4
Which one of the following substances crystallizes as a molecular solid? (melting points given) A) KI (681oC) B) SiO2 (1710oC) C) Sn (232oC) D) CH3OH (-98oC) E) Al2(SO4)3 (770oC)
D) CH3OH (-98oC)
What is defined as the selective passage of solvent molecules through a porous membrane from a more dilute solution to a more concentrated solution? A) permeability B) semipermeability C) osmotic pressure D) osmosis E) vapor pressure
D) osmosis
What name is given to a minor component in a solution? A) solvent B) unsaturated C) saturated D) solute E) supersaturated
D) solute
Lead crystallizes in the face-centered cubic lattice. What is the coordination number for Pb? A) 4 B) 6 C) 8 D) 10 E) 12
E. 12
Which of the following factors can contribute to the viscosity for a liquid? A. Temp B. hydro bonding C. molecular entanglements D. london forces E. all answers are correct
E. All answers are correct
What is the attractive force between like molecules involved in capillary action? A.Surface tension B. adhesion C.polarity D.viscosity E. cohesion
E. Cohesion