Arkansas State University
Department of Chemistry
and Physics
Worksheet 1
Limiting Reagents

 
 
 
 

1. Given the following reaction:                                        (hint: balance the equation first)

    C3H8    +    O2    g      CO2      +     H2O

If you start with 14.8 g of C3H8 and 3.44 g of O2,

a)  determine the limiting reagent

b)  determine the number of moles of carbon dioxide produced

c)  determine the number of grams of H2O produced

d)  determine the number of grams of excess reagent left


2. Given the following equation:

  Al2(SO3)3   +  6 NaOH  g  3 Na2SO3    +  2 Al(OH)3

a) If 10.0 g of Al2(SO3)3 is reacted with 10.0 g of NaOH, determine the  limiting reagent

b)   Determine the number of moles of Al(OH)3 produced

c)   Determine the number of grams of Na2SO3 produced

d)   Determine the number of grams of excess reagent left over in  the reaction


3. Given the following equation:                                       (hint: balance the equation first)

  Al2O3    +   Fe  g   Fe3O4    +     Al

a)   If 25.4 g of Al2O3 is reacted with 10.2 g of Fe, determine the  limiting reagent

b)   Determine the number of moles of Al produced

c)   Determine the number of grams of Fe3O4 produced

d)   Determine the number of grams of excess reagent left over in  the reaction

answers