remembering: molarity and stoichiometry because we know you brain is getting full!!!
DESCRIPTION
Calculate the molarity of 18 moles of LiBr dissolved in 6.0 L. =18 moles 6.0 L = 3.0 MTRANSCRIPT
Remembering:Molarity
and Stoichiometry
Because we know you brain is getting full!!!
Molarity = moles (Molar) or (M) litres
Calculate the molarity of 18 moles of LiBr dissolved in 6.0 L.
= 18 moles 6.0 L
= 3.0 M
How many moles of AlF3 are there in 20.5 L of a
0.172 M solution?
How many moles of AlF3 are there in 20.5 L of a
0.172 M solution?
20.5 L x
How many moles of AlF3 are there in 20.5 L of a
0.172 M solution?
20.5 L x 1 L
How many moles of AlF3 are there in 20.5 L of a
0.172 M solution?
20.5 L x 0.172 mole 1 L
How many moles of AlF3 are there in 20.5 L of a
0.172 M solution?
20.5 L x 0.172 mole = 3.53 moles 1 L
STOICHIOMETRY
Stoichiometry is where you use the balancing coefficients to
create a ratio between two different compounds in a
chemical reaction.
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g 24
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g
105 g Fe
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g
105 g Fe x 1 mole55.8 g
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g
105 g Fe x 1 mole x 2 mole Fe2O55.8 g 4 mole Fe
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g
105 g Fe x 1 mole x 2 mole Fe2O x 159.6 g55.8 g 4 mole Fe 1 mole
1. How many grams Fe2O3 of are required to produce 105 g of Fe?
2Fe2O3 + 3C → 4Fe + 3CO2
?g 105 g
105 g Fe x 1 mole x 2 mole Fe2O x 159.6 g = 150. g
55.8 g 4 mole Fe 1 mole
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
65.2 g ? g
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
65.2 g ? g
65.2 g x Na2CO3
2
1
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
65.2 g ? g
65.2 g x Na2CO3 x 1 mol Na2CO3
106.0 g Na2CO3
2
1
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
65.2 g ? g
65.2 g x Na2CO3 x 1 mol Na2CO3 x 2 mol NaCl
106.0 g Na2CO3 1 mol Na2CO3
2
1
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
65.2 g ? g
65.2 g x Na2CO3 x 1 mol Na2CO3 x 2 mol NaCl x 58.5 g NaCl
106.0 g Na2CO3 1 mol Na2CO3 1 mol NaCl
2
1
How many grams of sodium chloride are produced when you react 65.2 g of sodium carbonate?
1 Na2CO3 + 2 HCl → 2 NaCl + 1 H2O + 1 CO2
65.2 g ? g
65.2 g x Na2CO3 x 1 mol Na2CO3 x 2 mol NaCl x 58.5 g NaCl = 72.0 g 106.0 g Na2CO3 1 mol Na2CO3 1 mol NaCl
2
1
30.2 L of HCl gas (as STP) is dissolved in 0.500 L of water to produce an acid solution. What volume of 0.200 M Ba(OH)2 will neutralize this solution?
2 HCl + 1 Ba(OH)2 → 2 H2O + 1 BaCl2
30.2 L of HCl gas (as STP) is dissolved in 0.500 L of water to produce an acid solution. What volume of 0.200 M Ba(OH)2 will neutralize this solution?
2 HCl + 1 Ba(OH)2 → 2 H2O + 1 BaCl2
30.2 L ? L
30.2 L HCl
1
2
30.2 L of HCl gas (as STP) is dissolved in 0.500 L of water to produce an acid solution. What volume of 0.200 M Ba(OH)2 will neutralize this solution?
2 HCl + 1 Ba(OH)2 → 2 H2O + 1 BaCl2
30.2 L ? L
30.2 L HCl x 1 mol HCl 22.4 L
1
2
30.2 L of HCl gas (as STP) is dissolved in 0.500 L of water to produce an acid solution. What volume of 0.200 M Ba(OH)2 will neutralize this solution?
2 HCl + 1 Ba(OH)2 → 2 H2O + 1 BaCl2
30.2 L ? L
30.2 L HCl x 1 mol HCl x 1 mol Ba(OH)2 22.4 L 2 mol HCl
1
2
30.2 L of HCl gas (as STP) is dissolved in 0.500 L of water to produce an acid solution. What volume of 0.200 M Ba(OH)2 will neutralize this solution?
2 HCl + 1 Ba(OH)2 → 2 H2O + 1 BaCl2
30.2 L ? L
30.2 L HCl x 1 mol HCl x 1 mol Ba(OH)2 x 1 L Ba(OH)2 = 22.4 L 2 mol HCl 0.200 mol Ba(OH)2
1
2
30.2 L of HCl gas (as STP) is dissolved in 0.500 L of water to produce an acid solution. What volume of 0.200 M Ba(OH)2 will neutralize this solution?
2 HCl + 1 Ba(OH)2 → 2 H2O + 1 BaCl2
30.2 L ? L
30.2 L HCl x 1 mol HCl x 1 mol Ba(OH)2 x 1 L Ba(OH)2 = 3.37 L 22.4 L 2 mol HCl 0.200 mol Ba(OH)2
1
2
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
0.100 L ? L
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
0.100 L ? L
0.1000 L H2SO4
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
0.100 L ? L
0.1000 L H2SO4 x 0.200 mol H2SO4
1L
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
0.100 L ? L
0.1000 L H2SO4 x 0.200 mol H2SO4 x 2 mol KOH
1L 1 mol H2SO4
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
0.100 L ? L
0.1000 L H2SO4 x 0.200 mol H2SO4 x 2 mol KOH x 1 L KOH
1L 1 mol H2SO4 0.300 mol KOH
250. mL of water is added to 100.0 mL of 0.200 M H2SO4. What volume of
0.300 M KOH will neutralize it?
1 H2SO4 + 2 KOH → 2 HOH + 1 K2SO4
0.100 L ? L
0.1000 L H2SO4 x 0.200 mol H2SO4 x 2 mol KOH x 1 L KOH
1L 1 mol H2SO4 0.300 mol KOH
= 0.133 L of KOH
Homework: Worksheet #4 (in Molarity Unit)