Consider that calcium metal reacts with oxygen gas in the air to form calcium oxide. Suppose we react 6.02 mol calcium with 4.00 mol oxygen gas. Determine the number of moles of calcium oxide produced after the reaction is complete.

Question

Quizplus · Accepted Answer

The balanced chemical equation for the reaction is 2Ca + O2 → 2CaO. According to the stoichiometry, 2 moles of Ca react with 1 mole of O2 to produce 2 moles of CaO. Since 6.02 moles of Ca would require 3.01 moles of O2 to completely react, and we have 4.00 moles of O2 available, Ca is the limiting reactant. Therefore, 6.02 moles of Ca will produce 6.02 moles of CaO.

Consider That Calcium Metal Reacts with Oxygen Gas in the Air