5 Steps to a 5 AP Chemistry

22  STEP 2. Determine Your Test Readiness

45.Which molecule or ion in the following list has
the greatest number of unshared electron pairs
around the central atom?

(A) SO 2

(B) CO 32 −

(C) XeF 2

(D) CF 4

(E) H 2 O

46.What types of hybridization of carbon are in the
compound acetic acid, CH 3 COOH?

I. sp^3

II. sp^2

III. sp

(A) I, II, and III

(B) I only

(C) I and II

(D) II and III

(E) II only

Chapter 12

Choose from the following descriptions of solids
for questions 47–50.

(A) composed of atoms held together by delo-

calized electrons

(B) composed of molecules held together by

intermolecular dipole–dipole interactions

(C) composed of positive and negative ions held

together by electrostatic attractions

(D) composed of macromolecules held together

by strong bonds

(E) composed of molecules held together by

intermolecular London forces

47.Graphite

48.Ca(s)

49.CaCO 3 (s)

50.SO 2 (s)

51.The critical point on a phase diagram represents

(A) the highest temperature and pressure where

a substance can sublime

(B) the highest temperature and pressure where

the substance may exist as discrete solid and

gas phases

(C) the temperature and pressure where the sub-

stance exists in equilibrium as solid, liquid,

and gas phases

(D) the highest temperature and pressure where

the substance may exist as discrete liquid

and gas phases

(E) the highest temperature and pressure where

the substance may exist as discrete liquid

and solid phases

Choose the appropriate answer from the following

list for questions 52 and 53.

(A) London dispersion forces

(B) covalent bonding

(C) hydrogen bonding

(D) metallic bonding

(E) ionic bonding

52.This is why copper is ductile.

53.This is why acetic acid molecules exist as dimers

in the gaseous phase.

54.For the following, pick the answer that most

likely represents their relative solubilities in

water.

(A) CH 3 CH 2 CH 2 OH <HOCH 2 CH 2 OH

<CH 3 CH 2 CH 2 CH 3

(B) CH 3 CH 2 CH 2 CH 3 <HOCH 2 CH 2 OH

<CH 3 CH 2 CH 2 OH

(C) CH 3 CH 2 CH 2 CH 3 <CH 3 CH 2 CH 2 OH

<HOCH 2 CH 2 OH

(D) CH 3 CH 2 CH 2 OH <CH 3 CH 2 CH 2 CH 3

<HOCH 2 CH 2 OH

(E) HOCH 2 CH 2 OH <CH 3 CH 2 CH 2 OH

<CH 3 CH 2 CH 2 CH 3