stoichiometry. the quantitative relationship between the products and reactants in a chemical...
TRANSCRIPT
Stoichiometry
The quantitative relationship between the products and reactants in a chemical equation.
Compare reactants to products, products to
products, or reactants to reactants using
conversions.
In other words
Mole Ratio
(from balanced equation)
ExampleWrite the balanced chemical reaction of a
solution of potassium iodide and a solution of lead (II) nitrate.
___KI + ___Pb(NO3)2 ___PbI2 + ___KNO32 2
How many moles of PbI2 will be produced from 4.6 moles of KI?
_2_KI + ___Pb(NO3)2 ___PbI2 + _2_KNO3
Moles to Moles
4.6๐๐๐ ๐พ๐ผ1๐๐๐๐๐๐ผ 22๐๐๐ ๐พ๐ผ
=2.3๐๐๐ ๐๐๐ผ 2
How many grams of PbI2 will be produced from 3.2 moles of Pb(NO3)2?
_2_KI + ___Pb(NO3)2 ___PbI2 + _2_KNO3
What about grams?
3.2๐๐๐Pb (NO3)2 ๐ฅ1๐๐๐๐๐๐ผ 2
1๐๐๐ Pb (NO 3)2๐ฅ460.99๐๐๐๐ผ 21๐๐๐ ๐๐๐ผ 2
=1500๐๐๐๐ผ 2
Sodium reacts with chlorine gas to produce sodium chloride.
A. Write a balanced equation.B. How many moles of chlorine gas are needed if 4.0 moles of sodium react?C. How many grams chlorine gas are needed to produce 2.0 moles of NaCl?
You try
Sodium reacts with chlorine gas to produce sodium chloride.
A. Write a balanced equation.
2Na (s) + Cl2 (g) 2NaCl (s)
You try
Sodium reacts with chlorine gas to produce sodium chloride.2Na (s) + Cl2 (g) 2NaCl (s)
B. How many moles of chlorine gas are needed if 4.0 moles of sodium react?
You try
Sodium reacts with chlorine gas to produce sodium chloride.2Na (s) + Cl2 (g) 2NaCl (s)
C. How many grams of chlorine gas are needed to produce 2.0 moles of the NaCl?
You try
Lead (II) nitrate and sodium iodide react to form sodium nitrate and lead (II) iodide.
A. Write a balanced equation.B. How many moles of sodium iodide react with 250.0 grams of lead (II) nitrate?C. If 140.9 grams of lead (II) iodide are produced, how many grams of sodium iodide were used?
You try
Solid magnesium oxide reacts with water to produce magnesium hydroxide.
A. Write a balanced equation for the reaction.B. How many grams of MgO are needed to produce 264.7 grams of Mg(OH)2?
C. How many grams of magnesium hydroxide are produced when 57.0 grams of water are used?
You try
StoichiometryHomework:Yellow Packet โ Stoich WS 1
Lab:Final copy due Beginning of your class on FRIDAYDue to turnitin.com by Friday at 7 pm