General Chemistry II (CHEM113) ACS Final
verified question with 100% answers
1. _____ Law states that the potential energy (E) of two oppositely charged
particles with charges q₁ and q₂ decreases (becomes more negative) with
increasing magnitude of charge and decreasing distance between the two
particles
- ANSWER-Coulomb's
2. -nFE°cell =
- ANSWER-ΔG°
3. -RTlnK =
- ANSWER-ΔG°rxn
4. 1 * 10^-14 =
- ANSWER-[H+][OH-]
5. A body centered cubic unit cell has:
6. ___ atom per cell
7. a coordination number of ___
8. an edge length (r) of ___
9. a packing efficiency of ___
- ANSWER-2
10. 8
11. 4r/√3
12. 68%
13. a buffer is most effective and resistant to pH changes when the concentrations of
the weak acid/base and its conjugate are ____
- ANSWER-high
14. a buffer resists pH change by
- ANSWER-neutralizing added acid or base
15. a catalyst that exists in a different phase from the reactions
- ANSWER-heterogenous catalyst
16. a catalyst that exists in the same phase as the reactants
- ANSWER-homogeneous catalyst
,17. A crystalline lattice is nature's way of
- ANSWER-minimizing energy
18. a decrease in volume cause an ___ in pressure
- ANSWER-increase
19. A face-centered cubic unit cell has:
20. ___ atom per cell
21. a coordination number of ___
22. an edge length (r) of ___
23. a packing efficiency of ___
- ANSWER-4
24. 12
25. 2√2
26. 74%
27. a large equilibrium constant means the reaction lies far to the ___, while a small
equilibrium constant means the reaction lies far to the ____.
- ANSWER-right (products), left (reactions)
28. A larger atom exhibits greater dispersion forces because
- ANSWER-the electrons are held less tightly by the nucleus and therefore
polarize more easily
29. a reaction mechanism is broken down into
- ANSWER-elementary steps
30. a reaction with a ___ equilibrium constant proceeds nearly to completion
- ANSWER-large
31. A simple cubic unit cell has:
32. ___ atom per cell
33. a coordination number of ___
34. an edge length (r) of ___
35. a packing efficiency of ___
- ANSWER-1
36. 6
37. 2r
38. 52%
39. A soltion with strong solute-solvent interations displays ___ deviations from
Raoult's law
- ANSWER-negative
, 40. A soltion with weak solute-solvent interations displays ___ deviations from
Raoult's law
- ANSWER-positive
41. a substance that increases the rate of a chemical reaction but is not consumed
by the reaction
- ANSWER-catalysts
42. a thermodynamic function that increases with the number of energetically
equivalent ways to arrange components of a system to achieve a particular state
- ANSWER-entropy
43. A tree trunk has a C-14 decay rate that is 34% of living plants, how old is it?
- ANSWER-ln2/t1/2 = k
44. ln2/5730 = k = 1.21*10^-4 1/yr
45. lnN/N0 = -kt
46. ln(.34) = -1.21*10^-4(t)
47. t = 8920 years
48. A typical hydrogen "bond", despite it being the strongest intermolecular force, is
only about ____ as strong as a covalent chemical bond.
- ANSWER-2-5%
49. Adding an inert gas ____ on equilibrium
- ANSWER-has no affect
50. Adhesive forces cause the liquid's molecules to ___, while cohesive forces cause
the liquid's molecules to ___.
- ANSWER-spread out over the surface of the tube
51. stay together
52. Adhesive forces of a liquid are due to the attractions ___.
- ANSWER-between the liquid's molecules and the surface of the tube
53. All radioactive process are ___ order reactions
- ANSWER-first
54. alpha decay is symbolized by ___
- ANSWER-⁴₂He or α
55. Amorphous solids are composed of atoms or molecules that exhibit ___.
- ANSWER-no long range order
56. Amount of energy required to melt 1 mol of a solid is called the
- ANSWER-heat, or enthalpy, of fusion
verified question with 100% answers
1. _____ Law states that the potential energy (E) of two oppositely charged
particles with charges q₁ and q₂ decreases (becomes more negative) with
increasing magnitude of charge and decreasing distance between the two
particles
- ANSWER-Coulomb's
2. -nFE°cell =
- ANSWER-ΔG°
3. -RTlnK =
- ANSWER-ΔG°rxn
4. 1 * 10^-14 =
- ANSWER-[H+][OH-]
5. A body centered cubic unit cell has:
6. ___ atom per cell
7. a coordination number of ___
8. an edge length (r) of ___
9. a packing efficiency of ___
- ANSWER-2
10. 8
11. 4r/√3
12. 68%
13. a buffer is most effective and resistant to pH changes when the concentrations of
the weak acid/base and its conjugate are ____
- ANSWER-high
14. a buffer resists pH change by
- ANSWER-neutralizing added acid or base
15. a catalyst that exists in a different phase from the reactions
- ANSWER-heterogenous catalyst
16. a catalyst that exists in the same phase as the reactants
- ANSWER-homogeneous catalyst
,17. A crystalline lattice is nature's way of
- ANSWER-minimizing energy
18. a decrease in volume cause an ___ in pressure
- ANSWER-increase
19. A face-centered cubic unit cell has:
20. ___ atom per cell
21. a coordination number of ___
22. an edge length (r) of ___
23. a packing efficiency of ___
- ANSWER-4
24. 12
25. 2√2
26. 74%
27. a large equilibrium constant means the reaction lies far to the ___, while a small
equilibrium constant means the reaction lies far to the ____.
- ANSWER-right (products), left (reactions)
28. A larger atom exhibits greater dispersion forces because
- ANSWER-the electrons are held less tightly by the nucleus and therefore
polarize more easily
29. a reaction mechanism is broken down into
- ANSWER-elementary steps
30. a reaction with a ___ equilibrium constant proceeds nearly to completion
- ANSWER-large
31. A simple cubic unit cell has:
32. ___ atom per cell
33. a coordination number of ___
34. an edge length (r) of ___
35. a packing efficiency of ___
- ANSWER-1
36. 6
37. 2r
38. 52%
39. A soltion with strong solute-solvent interations displays ___ deviations from
Raoult's law
- ANSWER-negative
, 40. A soltion with weak solute-solvent interations displays ___ deviations from
Raoult's law
- ANSWER-positive
41. a substance that increases the rate of a chemical reaction but is not consumed
by the reaction
- ANSWER-catalysts
42. a thermodynamic function that increases with the number of energetically
equivalent ways to arrange components of a system to achieve a particular state
- ANSWER-entropy
43. A tree trunk has a C-14 decay rate that is 34% of living plants, how old is it?
- ANSWER-ln2/t1/2 = k
44. ln2/5730 = k = 1.21*10^-4 1/yr
45. lnN/N0 = -kt
46. ln(.34) = -1.21*10^-4(t)
47. t = 8920 years
48. A typical hydrogen "bond", despite it being the strongest intermolecular force, is
only about ____ as strong as a covalent chemical bond.
- ANSWER-2-5%
49. Adding an inert gas ____ on equilibrium
- ANSWER-has no affect
50. Adhesive forces cause the liquid's molecules to ___, while cohesive forces cause
the liquid's molecules to ___.
- ANSWER-spread out over the surface of the tube
51. stay together
52. Adhesive forces of a liquid are due to the attractions ___.
- ANSWER-between the liquid's molecules and the surface of the tube
53. All radioactive process are ___ order reactions
- ANSWER-first
54. alpha decay is symbolized by ___
- ANSWER-⁴₂He or α
55. Amorphous solids are composed of atoms or molecules that exhibit ___.
- ANSWER-no long range order
56. Amount of energy required to melt 1 mol of a solid is called the
- ANSWER-heat, or enthalpy, of fusion
