Stoichiometry Practice
Reaction types are either: Acid-Base reaction, oxidation-reduction reaction, or precipitate reaction
1. __HCl + __NaOH ---> __H2O + __NaCl
Reaction Type:________________
a. How many grams of NaCl will be produced when 22.85 g of HCl are neutralized by an excess of NaOH
according to the equation above?
b. How many moles of NaCl will be produced if 25 g of NaOH react with excess HCl?
c. If 37 grams of HCl react with 38 grams of NaOH determine the limiting reactant.
2. __KNO3(s) ---> __KNO2(s) + __O2(g)
Reaction Type:________________
a. How many grams of Potassium nitrate are required to produce 5.00 g of Potassium nitrite according to the
equation above?
b. How many molecules of Oxygen are produced if 32 grams of potassium nitrate decompose?
c. What is the percent yield if (x) grams of water are recovered?
3. __Al(s) + __CuCl2(aq) ---> __AlCl3(aq) + __Cu(s)
Reaction Type:________________
a. How many grams of Aluminum would react completely with 17.50 grams of Copper (II) chloride according to
the above equation?
b. How many moles of aluminum chloride can be produced if 2.34 moles of aluminum react completely?
c. If 300 grams of CuCl2 react with 50 grams of Al determine the limiting reactant.
Answers: 1.) 1:1:1:1 Acid-Base 1a.) 36.63 g NaCl 1b.) 0.63 mol NaCl 1c.) NaOH 2.) 2:2:1 redox 2a.) 5.94 g KNO3 2b.)14 L O2 2c.)72.0% 3.) 2:3:2:3 redox 3a.) 2.341 g Al 3b.) 2.34 mol AlCl3
3c.) Al 4.) 1:1:1:1 acid-base 4a.)36.3 f LiBr 4b.) 2.51x1023 molecules LiOH 4c.) 80.4% 5.) 1:3:2:2 redox 5a.) 140g CO2 5b.) 51.7 L CO2 5c.) O2 6.) 1:1:3:1 precipítate 6a.) 6 mol KNO3
6b.) 11 g Al(NO3)3 6c.) 95%
Stoichiometry Practice
4. __LiOH + __HBr  __LiBr + __H2O
Reaction Type:________________
a. Starting with 10.0 grams of Lithium hydroxide, how many grams of Lithium bromide will be produced?
b. How many molecules of lithium hydroxide are found in 10.0 g of lithium hydroxide?
c. If 40.5 grams of HBr completely reacted to form 7.25 grams of water determine the percent yield.
5. __C2H4 + __O2  __CO2 + __H2O
Reaction Type: ________________
a. If you start with 45 grams of Ethylene (C2H4), how many grams of Carbon dioxide will be produced?
b. How many Liters of carbon dioxide can theoretically be produced from 25 grams of ethylene?
c. If 96.0 grams of C2H4 reacts with 110 Liters of oxygen determine the limiting reactant.
6. __K3PO4 + __Al(NO3)3__KNO3+__AlPO4
Reaction Type:_______________
a. How many moles of potassium nitrate are produced when two moles of potassium phosphate react with
two moles of aluminum nitrate?
b. How many grams of aluminum nitrate will be needed to produce 15 grams of potassium nitrate?
c. If 210 grams of K3PO4 react with excess Al(NO3)3 to form 285 grams of KNO3 determine the % yield.
Answers: 1.) 1:1:1:1 Acid-Base 1a.) 36.63 g NaCl 1b.) 0.63 mol NaCl 1c.) NaOH 2.) 2:2:1 redox 2a.) 5.94 g KNO3 2b.)14 L O2 2c.)72.0% 3.) 2:3:2:3 redox 3a.) 2.341 g Al 3b.) 2.34 mol AlCl3
3c.) Al 4.) 1:1:1:1 acid-base 4a.)36.3 f LiBr 4b.) 2.51x1023 molecules LiOH 4c.) 80.4% 5.) 1:3:2:2 redox 5a.) 140g CO2 5b.) 51.7 L CO2 5c.) O2 6.) 1:1:3:1 precipítate 6a.) 6 mol KNO3
6b.) 11 g Al(NO3)3 6c.) 95%