Page 316 - Chemistry eBook

13 At st and t
the H2O
(1) B o
(2) B o
(3) T t
(4) T t
14 The meas
(1) a (2) a (3) t (4) t
15 Acco parti
(1) h
(2) h
(3) a
p
(4) a t
16 Give
Whi equil
(1) T t
(2) T v
(3) T o
(4) T
andard pressure, how do the boiling point he freezing point of NaCl(aq) compare to boiling point and the freezing point of
(l)?
oth the boiling point and the freezing point f NaCl(aq) are lower.
oth the boiling point and the freezing point f NaCl(aq) are higher.
he boiling point of NaCl(aq) is lower, and
he freezing point of NaCl(aq) is higher.
he boiling point of NaCl(aq) is higher, and
he freezing point of NaCl(aq) is lower.
temperature of a sample of matter is a ure of the
verage kinetic energy of its particles verage potential energy of its particles otal kinetic energy of its particles
otal potential energy of its particles
rding to the kinetic molecular theory, the cles of an ideal gas
Sample Regents Questions
18 For a given chemical reaction, the addition of a catalyst provides a different reaction pathway that
(1) decreases the reaction rate and has a higher activation energy
(2) decreases the reaction rate and has a lower activation energy
(3) increases the reaction rate and has a higher activation energy
(4) increases the reaction rate and has a lower activation energy
19 Which atoms can bond with each other to form
ave no potential energy
ave strong intermolecular forces
(2) at least one multiple carbon-carbon bond (3) two or more single carbon-carbon bonds (4) two or more multiple carbon-carbon bonds
21 Given a formula of a functional group:
O
C OH
An organic compound that has this functional group is classified as
Choice #4
re arranged in a regular, repeated geometric attern
re separated by great distances, compared
chains, rin
s?
J
(1) carbon atoms (2) hydrogen atoms
(3) oxygen atoms (4) nitrogen atoms
g
1
#18
u
s,
or
ne
n
e
2
tw
0
or
1
k
20 A molecule of an unsaturated hydrocarbon must have
Answer
(1) at least one single carbon-carbon bond
Explanation: Catalysts lower the activation energy, which increases the rate of
o their size
h statement describes this system at ibrium?
he volume of the NO2(g) is greater than he volume of the N2O4(g).
he volume of the NO2(g) is less than the olume of the N2O4(g).
he rate of the forward reaction and the rate f the reverse reaction are equal.
he rate of the forward reaction and the rate
reaction.
n the equation representing a closed system: N2O4(g) 2NO2(g)
(1) an acid
(2) an aldehyde
(3) an ester (4) a ketone
22 Which statement describes where the oxidation and reduction half-reactions occur in an operating electrochemical cell?
(1) Oxidation and reduction both occur at the anode.
(2) Oxidation and reduction both occur at the
c
315 © UNIT 8: KINETICS AND EQUILIBRIUM
of the reverse reaction are unequal. cathode.