Hi
ghSchoolChemi
cal
React
ionsPr
act
iceTestandAnswer
s
1.Calci
um hydr
oxideistr
eatedwithhy
drochlor
icaci
dt oproducewat erandcal
cium
chl
ori
de.Wri
teabalancedchemical
react
ionthatdescr
ibesthisprocess.
Ca(
OH)
2+HCl→ H2O+CaCl
2
Ca(
OH)
2+2HCl
→ 2H2O+CaCl
2
CaOH+HCl
→ H2O+CaCl
Ca(
OH)
3+3HCl
→ 3H2O+CaCl
3
2Ca(
OH)
2+HCl→ H2O+2CaCl
2
2.Considert
hefol
lowi
ngbal
ancedequat
ionf
ort
hesol
ubi
li
tyofbar
ium hy
droxi
dei
nan
aqueoussol
uti
on.
Ba(
OH)s)⇋B
2( a2+(aq)+2OH-(aq)
Ksp=5∗10−3
Whati
stheequi
li
bri
um expr
essi
onf
ort
hebal
ancedr
eact
ion?
Ba2+]
Ksp=[ [OH−]
Ba2+]
Ksp=[ [OH−]
2
Ba2+]
Ksp=2[ [OH−]
3.Whati
sthecoef
fi
cientf
oroxy
gengaswhent
hef
oll
owi
ngequat
ioni
sbal
anced?
C5H12+O2→ CO2+H2O
8
4
10
5
, 4.Whati
sthef
ormul
afort
hedi
ssoci
ati
onofi
ron(
II
)phosphat
e?
5.
N2(
g)+3H2(
g)⇌ 2NH3(
g)
Fi
gur
e1:Ammoni
agasf
ormat
ionandequi
li
bri
um
Whatwouldmostli
kel
yhappeni
fasci
ent
istdecr
easedt
hev
olumeoft
hecont
aineri
nwhi
ch
t
hereact
ionoccur
s?
Mor
eH2woul
dfor
m
Av
iol
entexpl
osi
onwoul
doccur
Mor
eNH3woul
dfor
m
Mor
eN2woul
dfor
m
LessNH3woul
dfor
m
6.Whati
sthet
ypeofr
eact
ionseenbel
ow?
AgNO3+NaCl
→ AgCl
+NaNO3
Addi
ti
on
Decomposi
ti
on
Si
ngl
e-r
epl
acement
Doubl
e-r
epl
acement
ghSchoolChemi
cal
React
ionsPr
act
iceTestandAnswer
s
1.Calci
um hydr
oxideistr
eatedwithhy
drochlor
icaci
dt oproducewat erandcal
cium
chl
ori
de.Wri
teabalancedchemical
react
ionthatdescr
ibesthisprocess.
Ca(
OH)
2+HCl→ H2O+CaCl
2
Ca(
OH)
2+2HCl
→ 2H2O+CaCl
2
CaOH+HCl
→ H2O+CaCl
Ca(
OH)
3+3HCl
→ 3H2O+CaCl
3
2Ca(
OH)
2+HCl→ H2O+2CaCl
2
2.Considert
hefol
lowi
ngbal
ancedequat
ionf
ort
hesol
ubi
li
tyofbar
ium hy
droxi
dei
nan
aqueoussol
uti
on.
Ba(
OH)s)⇋B
2( a2+(aq)+2OH-(aq)
Ksp=5∗10−3
Whati
stheequi
li
bri
um expr
essi
onf
ort
hebal
ancedr
eact
ion?
Ba2+]
Ksp=[ [OH−]
Ba2+]
Ksp=[ [OH−]
2
Ba2+]
Ksp=2[ [OH−]
3.Whati
sthecoef
fi
cientf
oroxy
gengaswhent
hef
oll
owi
ngequat
ioni
sbal
anced?
C5H12+O2→ CO2+H2O
8
4
10
5
, 4.Whati
sthef
ormul
afort
hedi
ssoci
ati
onofi
ron(
II
)phosphat
e?
5.
N2(
g)+3H2(
g)⇌ 2NH3(
g)
Fi
gur
e1:Ammoni
agasf
ormat
ionandequi
li
bri
um
Whatwouldmostli
kel
yhappeni
fasci
ent
istdecr
easedt
hev
olumeoft
hecont
aineri
nwhi
ch
t
hereact
ionoccur
s?
Mor
eH2woul
dfor
m
Av
iol
entexpl
osi
onwoul
doccur
Mor
eNH3woul
dfor
m
Mor
eN2woul
dfor
m
LessNH3woul
dfor
m
6.Whati
sthet
ypeofr
eact
ionseenbel
ow?
AgNO3+NaCl
→ AgCl
+NaNO3
Addi
ti
on
Decomposi
ti
on
Si
ngl
e-r
epl
acement
Doubl
e-r
epl
acement
