Limiting Reactant

First, balance the chemical equation:

_C₃H₈ + _O₂ → _H₂O + _CO₂

88.2g of C₃H₈ reacts with 140g of O₂. What is the limiting reactant?

Molar Masses:

C₃H₈ = 44.1 g/mol

O₂ = 32 g/mol

• C₃H₈

• O₂

• H₂O

• CO₂

First, balance the chemical equation:

_Al + _HCl → _AlCl₃ + _H₂

53.96g of Al reacts with 109.38g of HCl. Which reagent is in excess?

Molar Masses:

Al = 26.98 g/mol

HCl = 36.46 g/mol

• Al

• HCl

• AlCl₃

• H₂

A limiting reagent can NOT be described as-

• a reagent that remains after the reaction is complete

• a reagent that is completely consumed

• a reagent that stops the reaction

• a reagent that controls how much product is made

What mass of hydrogen is produced by the reaction of 4.73g of magnesium with 1.83g of water?

Mg + 2H₂O → Mg(OH)₂ + H₂

• 0.102g

• 0.0162g

• 0.0485g

• 0.219g

How many grams of each reactant are needed to make 46 grams of water in the reaction below?

2H₂ + O₂ → 2H₂O

• 2.5 g of H₂ and 41 g of O₂

• 5.1 g of H₂ and 41 g of O₂

• 46 g of H₂ and 81 g of O₂

• 1.4 g of H₂ and 163 g of O₂