.#r^* 3?'665+ +(l,*) = ? K''t'
Name A=Y
Each question is worth 5 points unless marked otherwise, totaling 40 points. Solubility table at end of
quiz.
1.) (worth 10 points) Aluminum hydroxide and sulfuric acid react as follows:
2 A|(OH)3(') + 3 H2SOa13q1 -> Al2SOa1o"1 + 5 H2O11l
lf vou start with 0.500 g of each reactanl how many grams HzO would you expect to make?
,; u I a*l- -, lonoQ- b.w{za*.o v lX. DLI
0 iooa *rcartli ^ ffi x -b-*u'? -),x tffie:
0 ,Ub 2 *.Yq K
uv
\\w# '
A\{o'A) 3^- z(tra.n+I ffi\
au.qu.l\i,.*
Quiz 4 Chemla Spring 2012
\4,0
0,311+
@'PL
%x bm.'ffi=
a,,^/2" N)r-'
I ;h 3or''
2.) tf the yield of H2O in the reaction in problem 1 is 0.1033 grams measured in lab, what is the
percent yield?
xtffiJo ? 5b,€1" !i"{I
3.) How many moles of particles are present when the following compounds are dissolved in water,
and what are the particles?
a. 1.000 moles of NazSOq
b. 1.000 moles of C5H5 | ,r*uQ Q (a,
4.) ldentify the element oxidized and the element reduced in the following reaction, and the
correct oxidation numbers before and after the reaction
-q +t o tq-L +l -z
CHa61+ 2O21g1 -+ CO26t + 2H2Og
F -{J
t- was oxidized from a value of - -I to a value of :L
-Z
C was reduced from a value of D to a value of
5.) Write the products of each reaction and the tvpe of reaction (5 points each).
a. LiOHl"qt+ HCl1"q; -+ *.o + L;U ori,d / t"u"y- n*dt11*'dc^
ry?*yr
,{ uA neNo3(aq) + Na2co3(aq) ) Aj1]or6 rj I N^ Nds @b)
