Question

8. Consider the following reaction

Ca(s) + 2HCl(aq)-> CaCl2(aq) + H₂(g)
Using the limiting reactant concept, how many moles of hydrogen can be produced from the reaction of 4.00
moles of calcium and 4.00 moles of hydrochloric acid?
a. 0,50 moles
b. 1.00 moles
c. 1.50 moles
d. 2.00 moles
e. 4.00 moles

Answer 1

The balanced chemical equation for the combustion of ethane is

2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(l)

The stoichiometric ratio between C₂H₆(g) and CO₂(g) is 1 : 2

Hence,

moles of CO₂(g) produced = moles of reacted C₂H₆(g) x 2

= 1.00 mol x 2

= 2.00 mol

Hence, the correct answer is "C".