- #1
salman213
- 302
- 1
The Title should actually be "Gravimetric Analysis"
srry about that but i can't change it now :(
1.
A 6.34-g geological sample, containing the mineral Boulangerite (Pb5Sb4S11) as the only lead-bearing compound, is subjected to chemical treatment in which the lead is quantitatively recovered as solid PbCl2. The mass of PbCl2 obtained is 3.80 g.
What was the percentage (by mass) of Pb5Sb4S11 in the sample?
2. n=m/MM
%yield= (actual yield over theoretical yield) * 100
3. Well I am guessing the equation is something like
Pb5Sb4S11 -------> PbCl2(s)
how to get cl in there or SbS out :S
mass is given as 3.8g
I have no clue
can someone can get me started atleast?
srry about that but i can't change it now :(
1.
A 6.34-g geological sample, containing the mineral Boulangerite (Pb5Sb4S11) as the only lead-bearing compound, is subjected to chemical treatment in which the lead is quantitatively recovered as solid PbCl2. The mass of PbCl2 obtained is 3.80 g.
What was the percentage (by mass) of Pb5Sb4S11 in the sample?
2. n=m/MM
%yield= (actual yield over theoretical yield) * 100
3. Well I am guessing the equation is something like
Pb5Sb4S11 -------> PbCl2(s)
how to get cl in there or SbS out :S
mass is given as 3.8g
I have no clue
can someone can get me started atleast?
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