Transcript Basic Stoichiometry Problems

Basic Stoichiometry Problems
Please use these examples to solve
today’s problems
Example #1
If 35.80g of aluminum chloride reacts with
excess silver nitrate, how many grams of the
ppt will be formed?
1AlCl3(aq) + 3AgNO3(aq)
35.80g AlCl3
1mol AlCl3
132.76g AlCl3
Al(NO3)3(aq) + 3AgCl(s)
3mol AgCl
1mol AlCl3
143.32g AgCl
1mol AgCl
= 115.9g AgCl
Example #2
15.0ml of a 3.0M magnesium chloride solution
reacts with excess silver nitrate, how many
grams of ppt will be formed?
1 MgCl2(aq) + 2 AgNO3(aq)
15.0ml
1 Liter
1000l
3.0 mole MgCl2
1 liter
Mg(NO3)2(aq) + 2AgCl(s)
2mol AgCl 143.32g AgCl
1mol MgCl2 1mol AgCl
= 12.9g AgCl
Example #3
12.01g of ammonium carbonate reacts with
excess ferrous bromide. How many grams of
the ppt will be formed?
1(NH4)2CO3(aq) + FeBr2(aq)
2NH4Br(aq) + 1FeCO3 (s)
12.01g(NH4)2CO3 1mol (NH4)2CO3 1mol FeCO3
96.11g
1mol (NH4)2CO3
115.86g
1mol FeCO3
= 14.48g FeCO3