Given the chemcal equation:2 Ca+O2>2 CaO,if 2 moles of CaO are formed in this reaction,then 2 moles of O2 must have reacted. True or False?
To determine whether the statement is true or false, we need to understand the stoichiometry of the chemical equation.
The balanced chemical equation: 2 Ca + O2 → 2 CaO
According to the equation, 2 moles of Ca react with 1 mole of O2 to produce 2 moles of CaO.
If 2 moles of CaO are formed in the reaction, it means that the reactant Ca has completely reacted. Therefore, to calculate how much O2 reacted, we can use the stoichiometry ratio from the balanced equation.
From the equation, we see that 2 moles of Ca reacts with 1 mole of O2. So, if 2 moles of CaO are formed (which means 2 moles of Ca reacted), the corresponding amount of O2 required would be 1 mole.
Therefore, the statement is false. If 2 moles of CaO are formed, only 1 mole of O2 must have reacted.