Alum Aluminum
Posted on | March 31, 2010 | Comments Off
Alum Aluminum
From % yield, how do you calculated how much alum can be produced from one aluminum can?
and from that how do you determine what volume of water can be cleared of suspended solids?
Here are some of my lab results:
% yield = 75%
mass of the aluminum = 0.58g
mass of alum = 7.61g
theoretical yield of alum = 10g
0.58g Al
7.61g alum
7.61g alum = 75%? 7.61g alum (actual yield) / 10g alum (theoretical yield) is not 75%, it is 76.1%
0.58g / 26.98g/mole = 0.021moles Al
in theory, this will produce 0.012moles alum
KAl(SO4)2•12H2O = 474.1g/mole
7.61g alum / 474.1g/mole = 0.016 moles alum produced
anyway
***if 75% of the total is 7.61g alum then 0.75 x ? = 7.616
7.61 / 0.75 = total expected. = 10.41g alum
if you used 1 entire Al can, 10.41g alum / molar mass = moles alum expected from 1 one Al can
clearing water of suspended particles is dependent upon the amount of time the water is allowed to sit for the particles to settle out.
Alum-A-Uke: Hotel California
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Lots of both kinds of iron in my well water. Do I need HWH with alum or non-aluminum sacrificial anode?
Non aluminum
You want the sacrificial anode to dissolve, not the heat exchanger..
Be sure to check the anode yearly and replace once it starts gatting pitted
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