Block:
Name: Kprl
Date:
lntroduction Chemical Reactions/Eq uations
Skeleton Equations and Sentence Descriptions of Chemical Reactions
Part 1. Based on the descriptions given, write a word equation and a skeleton chemical equation for each of the
following problems. Be sure to indicate states of matter when appropriate and use any specialized symbols fiom
Table 1l.l from your textbook when necessary. *All acids are going to be aqueous* Use #1 as an example.
1. Aqueous ammonium chloride reacts with aqueous sodium hydroxide to form ammonia gas Q'JH3). liquid
water. and aqueous sodium chloride.
Equation:
ammonium chloride * sodium hydroxide ) ammonia * water * sodium chloride
Skeleton Equation: NHtC\aql * NaOHlaqy ) NH31gy * H2O1r; + NaCllaql
Word
2. Aqueous sodium
phosphate and liquid water are formed when aqueous sodium hydroxide reacts with
phosphoric acid.
srclel,,t: NaOHg,
3. When
r ilr?o,abr1
S:
CiO
* C,(r>
=}
r tlzbt O
tDrr>
oxygen gas to form carbon dioxide gas.
y{:
car|ry,n +
5:
Q,l " O?{t) \-)
oxfJcn
-}
5. Solid sodium
I
carbn
),o^ioG
CO>q>
reacts with liquid bromine to form solid sodium bromide.
<oclturr.
*
Bror.ri
rc -+
S; M", * pr,g1 )
S
hr?0,1 7u.,
t OvyXcw -S+ carbn wu^ovifu
4. Solid carbon reacts with
6. When
t
heated, solid carbon reacts with oxygen gas to form carbon monoxide gas.
y,/: Ca"[n
W
--+
drr*, &rr l/-l
lJ<Br
7r1
heated, solid potassium chlorate yields solid potassium chloride and oxygen gas.
,
VcLOs
6 -4
KCI u)
+ 02fi)
7. Anhydrous (contains no water and is a solid) copper(Il) sulfate
reacts with liquid
water to yield solid copper(Il) sulfate pentahydrate (Cusoo. 5 H2o).
\d
.
ji:
Loyf-. i,t) s"l$,'l, n
CuSl,qUl
u
lJnl." cb(f' tt) s. (fnJ. f,J,J\J*h
l.lr\ty
CuSI,a. IIJLD
Block:
Name: KeV
Date:
8. When heated, solid calcium hydrogen carbonate yields solid calcium carbonate, carbon dioxide gas, and
water vapor.
, Llcir* \)*y^ ttvh^o[ )
gl
elc;ut^ carhnal" *
*rh,
J,or,/4 +
*1..
S, A0co)z{,J-> CtI)r61 n (b,6) + L1r0,;
9. Ethane gas, C2H6(g),
W
i
reacts with oxygen gas to form carbon dioxide gas and water vapor.
-+ acur$ ),cv;tle *
'-*4u
e{l"trk + dyl.^
Czilt tjl n
S.
(),0 -+
(Cr(,)) ,.- llrya.,1
10. Aqueous copper(Il) nitrate reacts with aqueous sodium iodide to form solid copper(I) iodide, aqueous
iodine, and aqueous sodium nitrate.
W;
Cqpr,
$:
Part2.
()
NJralc
gr[n$:)26..d
t
" SJ iu,q ;o[t)e-)
uf
fu(ti idirl' *
i*iv,t-
. *oli";-SrA
-+ CJ.tr) sTzpj) + N^NOq
lr.hIl^1;
off of the word equations given, write sentence descriptions and skeleton chemical equations for
each of the following problems. Use #11 as an example.
11.
Based
)
potassium chlorate(s)
potassium chloride(s) + oxygen gas(g)
Description: Solid potassium chlorate decomposes into solid potassium chloride and diatomic oxygen gas.
Skeleton Equation: KCIO31.; -+ KCI1.;
12.
lead(IV) oxide(s)
$:
.D:
13.
?b0r1e1
5riJ
-+
lead(Il) oxide(s)
oxygen(g)
-+ ?bAu) " O,rj)
le*1(1v')rnio1,
aluminum(s)
+
+
A.o"o^fd
r,.t
lead(Il) nitrate(aq) -+
>"liJ luA (,t) oxiil. */ oxyyn
aluminum nitrate(aq) +
g: Atto + ?blr,n).r^r) -+ AlCnn)r @)
ll,*;nu,-, nc},
14. potassium(s) + water(l) -+
Dr
+ Oz(gl
S.irl
ras.
lead(s)
* Yb6)
*,*ffiia0)rrlrJ, lpotassium hydroxide(aq)
lr-
cr-lueoui-rrv'
Alu^,n,*
"'
n;l^ln
il
+ hydrogen(g)
t:i4
lo'*l
S:' Kro o Hz,}ul
e (.DNc^1 + ilze)
); "sJJ yolaviv'* ^ru1 *olrn rc,,r{ ,t" 0r^
15. sodium sulfite(aq) + hydrochloric acid -+
<,utae5
hy)*y"
7"dr;,- l^/*x,d., o*J
sodium chloride(aq) + water(l)
*
sulfur
dioxide(s)
S, fthr-s0r(d4).r HC(s^11 + AhC/1o; " ilOtq + S0z(;)
D: &Lrxul zul,u* sullle n *{rn wiht,
acic) J- Ar^ Npws
,hylychlor,c
waler , c,.tJ s"l.,J s"l[f" ),;ov;/.t,
,)rr*
|'nt '
cLLril-p,
'
Name:
(OU
Block:
Date:
16. Ammonium sulfate(aq) + potassium hydroxide(aq)
S'
* Vollotl -+
irv[r').5CIqCaq)
K.So,{car)
p: At"*,u tvvttuhiet+ grlfrJ. reor4s
'
17.
an)
,
p'b(Mi', (oi>n LrSc"t>
D"
Aaueov>
-+
anJ-c,grtt,,s
D'
&h,^ o<d, ad li$ruplrr",
g,: €q*
ammonia(g) + water(l)
l-lzgt1
l. #r,*
61uuus
potassium nitrate(aq) + lead(Il) sulfide(s)
"
?bs
n-,
yaksiv,,, sulfifu
-+
ar,ert
y-eacl
+, Sr* Upolorstu^
^i0*Jt o*)
calcium phosphate(s)
* ?rQ1rS - t"p}r)rrr1
CnOn>
Iron(s)
+
pentoxide(s)
S.
19.
r Nl{rrg t
*
'uurtJ:cr,
VN}sq,
sr);l 1*S '^('!rffh/.
f i,
18. Calcium oxide(s) + diphosphorus
potassium sulfate(aq)
*&L oayeo,s ,z,4qsr;u* hlav;/,
polatl;siru sul&J. 614t+toitiq- 1{6,
Lead(II) nitrate(aq) + potassiunY sulfide(aq)
Sl
+
+ silver acetate(aq)
V^,lrr,rA y;dJ hlriut- ?W)"t,
+ iron(Il) acetate(aq) + silver(s)
* ht"il{Sqaq) -)
D'.$lrJ iron
a*us
?r(c,ll4)La1\
'
. Al
ott
*l;t.
AsU>
*rL^t, yiell icar..(r() -ulh(1*r) o,o) ,olJ silvcu,
20. Potassium carbonate(aq) + barium chloride(aq) + potassium chloride(aq) + barium carbonate(s)
5: KzCbzc^q) + hClzFD r ECI&) + *.@,r>
y: Nr,,u"i r,ol*ryr- *.br"q* ,*J qlutolrs b,ar;vu ,l,Lr;/, yvl"t alu<6o1 rl,,'iorr;u^
ilLrik
i"d e'[d bn i,i- ;,8^"L.
or,.)
siluer
21. Magnesium nitrate(aq) + sulfuric acid -+ magnesium sulfate(aq) + nitric acid
S: M3lnrq)r64 * Hrgq&?) + Mjgq(q)
+
Httbsc^t1
fiwtiuta nilrfi, ord sul$,ric o*l y.Uvrytv;iut , sulftfi "'J i",Jrlc *n)'
22. Aluninum chloride(aq) + sulfuric acid + aluminum sulfate(aq) + hydrogen chloride(g)
S: AlCl>r"O + tl>S1qGi+ (lrbo,flrr*r.r HClrl
Dt (rrcou:
Dr
h*?tt
aluwi,t^ot-
,,llor;k
arl
sul{uric
tllrv;il
ord lvlJ alvuvs
qluuinr^
t,/fi)e o,J
ly)ry"
"1s+ oxygen(g)-+ nitrogenmonoxide(g) + water(g)
23. Ammonia(g/
S' N)flrlrl + O-O)
Di A^*^h
f
-)
NOr3)
* Hr,0u1
"rnJ, -tlL 6W,,
,L
AieU
,i,f,ryn^
***r,/,
5x
^;
*o,lr.
uTr,