Stoichiometry Practice Problems

1.)  How many grams of Ag2SO4 can be produced from the reaction of 13.6 grams of AgNO3 with excess Na2SO4?                                                        (12.5 grams)

___ AgNO3  +  ___ Na2SO4  à  ___ Ag2SO4  +  ___ NaNO3

 

2.)  How many grams of NaOH are needed to react completely with 9.3 grams of CaCO3 in a double replacement reaction?                                                        (7.4 grams)

___ NaOH  +  ___ CaCO3  à  ___ Na2CO3  +  Ca(OH)2

 

3.)  How many grams of oxygen are needed for the complete combustion of 25.0 grams of propane (C3H8)?                                                                    (90.9 grams)

___ C3H8  +  ___ O2  à  ___ CO2  +  ___ H2O

 

4.)  How many grams of silver are produced in the reaction of 0.139 moles of AgNO3 with copper?                                                                                            (15.0 grams)

___ AgNO3  +  ___ Cu  à  ___ Ag  +  ___ Cu(NO3)2

 

5.)  How many moles of KNO3 can be produced when 24.0 grams of Ni(NO3)2 react with excess KOH?                                                                                       (0.263 moles)

___ Ni(NO3)2  +  ___ KOH  à  ___ Ni(OH)2  +  ___ KNO3

 

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