Question

Given the balanced equation CO2 + Si → SiO2 + C, if you were to react 1 mole of CO2 with 1 mole of Si, which statement is TRUE? A) The CO2 is the limiting reactant. B) The Si is the limiting reactant. C) The SiO2 is the limiting reactant. D) You have equal stoichiometric amounts of reactants. E) none of the above

Answer 1

When 1 mole of CO2 reacts with 1 mole of Si according to the balanced equation CO2 + Si → SiO2 + C, neither is the limiting reactant because they are both provided in equal stoichiometric amounts. The correct answer is D) You have equal stoichiometric amounts of reactants.

Step-by-step explanation:

The question asks which reactant is the limiting reactant when 1 mole of CO2 reacts with 1 mole of Si based on the balanced equation CO2 + Si → SiO2 + C. According to the equation, CO2 and Si react in a 1:1 molar ratio to produce SiO2 and C. This means for each mole of CO2, 1 mole of Si is needed, and vice versa. Since both reactants are provided in equal molar amounts, you have equal stoichiometric amounts of reactants, and neither is in excess.

There is no need to calculate the amount of product as the stoichiometric ratio between the reactants is 1:1 and 1 mole of each reactant is given. Therefore, the correct answer is D) You have equal stoichiometric amounts of reactants.