1) se a*out +0.,0grams of Aluminum foil not the -x- suare
) /n part / step &: nl! add a*out 101m2 of 34 solution and
5eep it under fume ho
#) After solution is %ooled pla%e mar5 on *ea5er 6ith mar5er or
tape.
&) Slo6l! and 7arefull! add onl! 101 m2 of Sulfuri% a%id
(4S&) to the 34 solution.
Rea%tion is 8ER9 exothermi% and a lot of heat 6ill *e
released.
,) oil Solution gentl! until ;olume rea%hes the mar5 !ou pla%ed
on the ilter using ;a%uum ?ltration. Remem*er to pre6eigh !ou ?lter
paper. @ash 6ith et
) Dr! in o;en *elo6 B07.
Post Lab Questions
Instructions:'lease do NOTput units on !our ;alues as the units
are alread! indi%atenum*er is displa!ed 6ith %orre%t signi?%ant
?gures i.e. 1.#&0 not 1.#&. 9ou ma! need tdigits displa!ed
in the %ell using the in%rease or de%rease de%imal *uttons.
7/24/2019 10. Alum(1)
2/4
1a. $he Aluminum foil did not %ompletel! rea%t.
1*. Alum sample 6as left in the *ea5er and not transferred to
the ?lter paper.
1%. Alum Sample 6as not dried %ompletel! in the o;en.
1) Determine ho6 the follo6ing error 6ould ae%t %al%ulated the
per%ent !ield of alum.ee%t). rie
) A pie%e of an aluminum %an 6as %ut into small pie%es. $hen
0.&g of the pie%es froprepare potassium alum a%%ording to the
pro%edure used in la*. 4o6 man! grams shoa B#.B !ield (alum M@ F
&&.&1gGmol)
