Name:_M
~s~
vJ--""'-L.
GCZ
....:::::oo..._l______:_
(Gy
---+--l_ __,______
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oate: _ _ _ _ _ _ _ _ _
Particle Model and Balancing Equations
1. Represent each equation using the particle model.
oo
oH
!JC
n1,·
1:::.
cl
0 0
0 - '&.
6 \+ .
oo
~~
+ 2 NaOH
+
c. Ba(OH)2
<:
~
+
~
Q N
~t\-
0
C\
D A\
6. H-
*s
0
0
2.~Fe
+
3 02
3. C3Hs +S02
5. Ba(OH) 2
~e203
-3C02
+
+4 H20
Na2S04 ~ BaS0 4
6.2Al +3o2
~ 2 Ah03
7. C6H1206
+ 6 02
~C02
+ 2. NaOH
+ " H20
1
Name: _ _ _ _ _ _ _ _ _ _ __
Date: _ _ _ _ _ _ _ _ _ _ __
8. Pb(N0 3) 2 +
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2 KI ~ Pbl 2 9J<_N0 3
9. Ch + 2 Na olNaCl
10.4 NaOH
11 ~3
~ 4 Na
+ 02
~Ch ~Gt-rc1
+ N2
14.4 P
+ 5" 02
15.2.P
+
+2.B20
---2 P20s
3 Ch ~
22W Cl
+
24'2..Fe 20 3
+ 3C
2 PCb
CaC0 3
~
~
CaCh
3 C0 2 +
4 Fe
25. 2.H2 + 02 ----2H20
26.2Na + Ch ----2NaCl
2
r
Name:
Date :._ _ _ _ _ _ _ _ _ _ __
32. C2H 50H + '3 0 2 ~ 2 C02
33.ZN2
+ $" 02 ~
35. C3Hs +
36(o02
~
::t 39.
203
Mg 3Nz_ +
43.2.H2S04
+
2 Al
+
c
+
fi H20
£.. Cu20
+ 5" H20
+
2 S02
~ SMgO + l NH3
NaOH
44. CaC03 +'2.-HCl
45. 2 Nal
~
2 Na3P04
41.?>f eCl 2 +
+
~ 4 C02
3 H20
40. Cr(OH) 3 +
42.~HCl
~1, co2
C4H90H
38.2.Cu 2S +
+ ~ H20
2 N20s
5 02
+
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NaCr0 2 +l H20
~
Fe3(P04)2
~
~ 2.AlCl 3 +
C02
~
~
Pb(N03)2
+
CaCb
~
+ (oNaCl
3 H2
2H20 + 1._S02
+
C02 · +
H20
Pbi 2 + 2NaN0 3
3
Name: _ _ _ _ _ _ _ _ _ _ _ _ _ __
Date: _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
SciTec4
3. Choose the balanced equation
C) KOH + H2S04
~ 2 H20 + K2S04
@}2 KOH + H2S04
4.
OHSOs + KH2
~
Choose the balanced equation
+ NaOH
A) 2 HCI
~
+ H 20
NaCI
B) HCI
+ NaOH
~
NaCl
+ 2 H 20
~CI
+ NaOH
~
NaCI
+ H20
D)HCI
+ 2 NaOH
~
+ 2 H 20
2 NaCI
5. Which equation is !!2! balanced?
C) H3P04 +
3 KOH
~
K3P04
@3HBr +
Fe(OH) 3
~
FeBr3 +
6.
6 H20
Which equations are balanced?
A) CH4
®
+ 3 H20
4C2Hs
C) C3Hs
@)c4Hs
+ 3 02
+
~
13 02
+ 2 02
+ 6 02
~
~
C02
~
+ 2H20
8 C02
3 C02
4 C02
+ 10 H20
+ 4H20
+ 4H20
7. The neutralization of hydrochloric acid (HCI) by calcium carbonate (CaC0 3 ) produces calcium
chloride (CaCI 2 ), carbon dioxide (C0 2 ) and water (H 20). Write the balanced equation for this
neutralization reaction .
p
2-HC\+
CaCiz
f
2
2
I
\
4
3
--------
r
Name: _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
Date: _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
8.
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The combustion of methane, CH 4 mixed with 0 2 produces carbon dioxide, C0 2 , and water, H20. The
unbalanced chemical equation for this reaction is as follows:
Balance the chemical equation for this combustion reaction.
9.
The complete reaction of 8 g of methane (CH 4 ) with 71 g of chlorine gas (CI 2 ) produces 73 g of
hydrochloric acid (HCI) and a certain amount of carbon (C). The balanced equation for this reaction
=tl '3
8g
is as follows:
X'5
-=/gCj
CH4 + 2 Cb---+ C + 4 HCl
What mass of carbon is produced by this reaction?
=tl~t~s = ·=i-<10
4ll!J- =135
=
G oF &rhol'"l
9
10. When 191 g of copper, Cu, is combined with 756 g of nitric acid, HN0 3, the chemical reaction
produces 563 g of copper nitrate, Cu(N0 3 h, 108 g of water, H20, and a certain amount of nitrogen
dioxide, N0 2 . This reaction is represented by the following balanced chemical equation:
Cu
+ 4HN0 3
--7
Cu(N0 3 ) 2
+ 2H2 0 + 2N0 2
nitrog~~ \ oxide~s his reac~~gp educe? lOg-~
ICl 1~ =ts~ = S"03g +- toa-5 + xs
ql,\=ttj ~ (o:.} \ 0 t X'lj
What mass of
X~
X~-:
2=J.<o5 .
11. The combustion of 16 g of methane (CH 4 ) in 64 g of oxygen gas (0 2 ) produces 36 g of water (H 2 0)
and a certain mass of carbon dioxide {C0 2 ). The following balanced equation represents this
'20s -=- -sbs +y
combustion reaction:
Combustion Reaction Involving Methane
-)
2 H2o
1
co2
4~ ~:.X
s~ ~X~ .
The combustion of 11 g of propane (C 3 H8 ) in 40 g of oxygen gas (0 2 ) produces 18 g of water (H 2 0) and a
certain mass of carbon dioxide {C0 2 ). The following balanced equation represents this combustion
s-~ ~ 1%~
reaction:
Combustion Reaction Involving Propane
c.., H., + s o", -) 4H,c.., o , :1 co.). .
l-- tlog
t~ ~ x
,.)
0
+ )(
3%C):. ><.
...
"
Which of these two reactions pro uces the smaller mass of carbon dioxide (C0 2 )? For each reaction,
show the calculations required to determine the mass of carbon dioxide (C0 2 ) produced.
Combud-'on of fYOf=aN .
5