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NAME:
.'
PERIOD:
UNIT 8 REVIEW PROBLEMS
, Balancing equations:
'1.
, ,~ CJi6 + ~02
C {},
\2-
H i>.,
rz,
<:;:02
~ ~ H20 ~, /J.
'C
"'~'
~O
)--I
o
O ~ 30
1 212-
3,~
IS 20
!i NaI + ~~b(S~4)2 +;., PbI4 + ,,2. Na2S04,
2.
NQ " d\, L/
Y "
"'I'
Pb
yb
S
I'
S
,;)
o
o 8
3.
',kl
NH3+S
N '1.\ LI
H ",~ \",
11--
6 ~'()
4.
d.,Fe(OHk~
P2 ~
!:/ NO+~
kf'
f4~,
0
_ Fe203+
t
z,
,,'1-, ~
H20
l..1
),},.
'E.
1L ,
d?&j..'~I()
.3 H20
Fe...'" a
f Q.
o ~~
0
/-l J ("
,I
If
J.
~l,o
£ (.,
."..
~l
-r
H .~L.J
I'J ~
H ~ LI
rJ'i-d-
o ~~
IV\. .
o
"R.
3'.
,
j
Mj I
_ H3P04 + ~ NaBr ~ j HBr + _ Na3P04
6.
14'\..3
H J
?
o
PI
I
()
q
t(
kiO- 3
,.JA'i 3
a
, PJr- '\-3
.1:3
l'
,l..Jr
, 7.
--~-
~CaO+ _MnI4 ~ _Mn02+
8.
~
C~
1-. d.
o .\{ a
T
.1- 1-\
_F~03
I-e. ~
()
H
.~(p
~~
~
0 ~
fVll1 I
M"" I
9.
"l
£CaI2
+ ~H20 -7
8. ~
a. Fe(OH)3
fe i"J.
0 3lo
H-
]~
--<-..
- - -"
-:-
,.
~~
\
.,
10.
_ C2H2 + ,;!.H2 -? _ C2f4
11.
~ VF5 + ~m -? -'---V2IlO + !2.)IF
vi-a
~
10
F 1-- i o
'!-'/o
I~ '),.10
FS
H-
\/
.I 1-
10
r'IO
_ OS04 +
12.
o..
0
Pi:
CQ
13.
I
Osl
q
0
~,', l../
Pi::
1, d,
1~
C1
~g
-
CF4
c
'~
+ -J Br2 -? - CBr4 +d,- F2
C1
F
I--(
rsr ~~'
14.
J- PtC4 -? ~ Pt02 -+- _ Os(:18
F ~":-I
8r
l..1
~Hg21z +_ O2 -? ~ Hg20 + ~ 12
qj
~'-f
I~ ~ '-l
I
~'i
±
'if~
0
~
0
i.
J.
Classify each of the following reactions as 'combustion, synthesis, decomposition,
double displacement, or neutralization:
,
'
C
16. _---C-
C3Ha(g)+ 502 (g) ~ 3 CO2 (g) + 4 H20 (g)
17. __
FhO (I) + CaO (s)~ Cii(0H)2 (aq)
,_S,-,-' __
S,D
18.,-'-- __ "-'--_
, 19.
single replacement,
_~S_,_R__
2I<I, (s)+ Brz (g)~ 2I<Br (s) + Iz (s).
2 Al(s) + 3 CuClz(aq) '-:-+ 2 AlC13(aq) +3 Cu (s) ,
..
....
20. _~C__
,,,,_2 Mg (s) +o~(g) ~2
22. __
26.
D~~:.-.-_,
AgN03 (aiD + HCI (~q)~AgCI (5) + HN03 (aq)
S
24.
MgO (s)
_--,-t-J_, __
N2(g)+ 3 Mg (s) ~Mg3N2 (5)
HzS04 (aq) + Ca(OH)z(aq)~' CaS04 (aq) + 2HzO (1)
28. __
b_~--,-_MgClz (aq) + LizC03 (aq) -7 MgC03 (5)+ 2 LiCl (aq)
29. __
C__
CJIIZ (1)+ 9 O2 (g) -7 6 CO2 (g) + 6 HzO (g)
_---=~_
CaC03 (5) -7 CaO (5) + CO2 (g)
_--.:......
__
2 AgN03 (aq) + Cu (5) :7 CU(N03)2 (aq) +2Ag (8)
.'
'.
'.
.
'
.
'.'
(1)+4 02(g) -7 3 CO2 (g) +3 H20 (g)
_----'- __
C3~0
____
2CsHs (1)+ Fe (s)7 Pe(CsHs)2 (1)
__
,...--_
SeC4 (s)
.
".
+ O2 (g) ,~SeO; (8) _t 3Ch (g)
.
'.
2 Mgl, (aq)
~
+ Mn(S03h
(aq)7
.
..
.
..... .:
',.
.
.
.
+ Mnl,
2 MgS03 (8)
(aq) ,
.
+
-,.-_..,.......,....-,-03 (g) 7 O-(g) O2 (g) ,
"
'
Write the complete ionic equation for each of the following balanc~d equations and list the spectator
ions:
',',
40. CdBr2 (aq)
.,11-
Cot
",
(~lrO!.
+ Na2S (aq)
-
',',
-+ CdS (8) + 2 NaBr (aq)
1
,a..-
13r- ~1t- ,;J
SPECTATOR IONS:
"-!o-- +
41. H2S04 (aq) + BaCh (aq)
01H\_~)
Ala. (~) t 3'~)
~'
-+
BaS04 (8)
Ht ~
42. Pb(C2H302h (aq) + 2. HCI (aq)
Pb
.lt~')t
~r
+S 0 'I ~~'i).,. ~';>';Dj
SPECTATOR IONS:
;;
Cl..l-130z-
SPECTATOR IONS:
(ll~) +
-,
+ 2 HCI (aq)
H ~
Cl- CD.~)
-7
13""
C1 - ,
-+
J
PbClz (s) + 2 HC2H302 (aq)
H t(~l"
l-t +a..,J CJ- 113 OJ. -
J. Cl-c'1)
so
i(
(S)
+ J.
1-/ io.~) f r2 C1 ~~)
Write the net ionic equation for each of.the following reactions:
43. 2 K+ (aq)
+ crO/" (aq) + Ba2+ (aq) + 2 N03- (aq) -.. BaCr04
44. 3 u' (aq)
+ 3 OIf (aq) + Fe3+ (aq) + 3 N03- (aq) -.. Fe(OHh
.~. Fe . (OJ} +
o2r
45.
6 Na+ (aq)
.
'.
J,
-
-3 011 {~l
+ 3 cr04
Ii...
2-
(aq)
h
(0 H)
+ 2 K+(aq) + 2 N03 - (aq)
(8)
+ 3 Li+ (aq) + 3 N03- (aq)
3(S)
+ 2 Al3+ (aq) + 6 Br' -.. 6 Na+ (aq) + p Br' (aq) + Al2(Cr04)3 (s)
...'.
.1t
~
C-O
, u-'.0 .~.. 1'. f
-"7
(8)
.eJ
A -tIJ '
'Al.··..·
IJ
IJ
.l. ----,
An'
Ii..f~
(hO"
t.,.
Cf
') ~(S)