Q2/ The aluminum content of an alloy is determined gravimetrically by precipi- tating it with 8-hydroxyquinoline (oxine) to give Al(C,H,ON)3. If a 1.021-g sample yielded 0.1862 g of precipitate. what is the percent aluminum in the alloy?

Q2/ The aluminum content of an alloy is determined gravimetrically by precipi- tating it with 8-hydroxyquinoline (oxine) to give Al(C,H,ON)3. If a 1.021-g sample yielded 0.1862 g of precipitate. what is the percent aluminum in the alloy?

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter2: Crystallization

Section: Chapter Questions

Problem 3Q

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Question

icel Chiemistry
nalytical Chemistry
Sheet No. 2
What weight of pyrite ore (impure FeS,) must be taken for analysis so that the
BASO, precipitate weight obtained will be equal to one-half that of the percent S
in the sample? NAr
Q2/
The aluminum content of an alloy is determined gravimetrically by precipi-
tating it with 8-hydroxyquinoline (oxine) to give Al(C,H,ON). If a 1.021-g
sample yielded 0.1862 g of precipitate. what is the percent aluminum in the
alloy?
Q3/
A mixture containing only BaO and CaO weighs 2.00 g. The oxides are con-
verted to the corresponding mixed sulfates, which weigh 4.00 g. Calculate the
percent Ba and Ca in the original mixture.
04/ A sample of 0.676g of an unknown compound containing barium jons
excess of NazSO4. If the mass
(Ba) is dissolved in water and treated with
the original unknown compound?

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