Arkansas State University Department of Chemistry and Physics

For each reaction below:

a)  determine the limiting reagent

b)  determine the number of grams for each of the products

c)  determine the number of grams of excess reagent left

1.     H₃PO₄    +    3 KOH    g      K₃PO₄      +    3 H₂O

start with 20.0 g H₃PO₄  and  30.0 g KOH

2.   Zn  +  2 HCl     g   ZnCl₂    +   H₂

start with 10.0 g Zn and 36.46 g HCl
 

3.   P₄  +  5 O₂      g   P₄O₁₀

start with 42.0 g P₄ and 16.0 g O₂

answers