Question

Given the chemical equation: 2 Ca + O 2 → 2 CaO, if 2 moles of CaO are formed in this reaction, then 2 moles of O 2 must have reacted. True False

Answer 1

FALSE

Look at the stoichiometry from the reaction

Step-by-step explanation:

2Ca + O₂ → 2 CaO

When we have this reaction, it means that 2 moles of calcium react with 1 mol of oxgen for the production of 2 moles calcium oxide.

So, If we produced 2 mol of CaO it would has reacted 1 mol of O₂