Limiting Reactants and Percent Yield

How do you calculate percent yield?

• (Actual Yield / Theoretical Yield) x 100%

• (Theoretical Yield / Actual Yield) x 100%

• (Actual Yield + Theoretical Yield) x 100%

• (Actual Yield - Theoretical Yield) x 100%

What is the mole ratio in a chemical reaction?

• The mole ratio is the ratio of the coefficients of reactants and products in a balanced chemical equation, used to convert between moles of different substances.

• The mole ratio is the total number of moles of reactants in a reaction.

• The mole ratio is the ratio of the mass of reactants to the mass of products in a reaction.

• The mole ratio is the number of molecules in a gas at standard temperature and pressure.

What is theoretical yield?

• The amount of product actually produced in a reaction.

• The maximum amount of product that can be produced from a given amount of reactants, based on stoichiometric calculations.

• The amount of reactants needed to start a reaction.

• The minimum amount of product that can be produced from a reaction.

What is the role of stoichiometry in determining limiting reactants?

• Stoichiometry allows for the calculation of the amounts of reactants and products involved in a reaction, helping to identify the limiting reactant.

• Stoichiometry is used to balance chemical equations without regard to reactant amounts.

• Stoichiometry determines the temperature at which a reaction occurs.

• Stoichiometry is only relevant for gas reactions and not for solids or liquids.

How do you convert grams of a reactant to moles?

• Moles = Mass (g) / Molar Mass (g/mol)

• Moles = Mass (g) x Molar Mass (g/mol)

• Moles = Molar Mass (g/mol) / Mass (g)

• Moles = Mass (g) + Molar Mass (g/mol)

What is a limiting reactant?

• The substance that is completely consumed in a chemical reaction, limiting the amount of product that can be formed.

• The reactant that is present in excess and does not limit the reaction.

• The reactant that is added to speed up the reaction.

• The product formed in a chemical reaction.

How much SOCl2 is produced from 16.2 g of SO2 and 13.7 g of PCl5?

• 5.00 g of SOCl2

• 7.83 g of SOCl2

• 10.50 g of SOCl2

• 12.00 g of SOCl2

What is the significance of the limiting reactant in a chemical reaction?

• It determines the maximum amount of product that can be formed and affects the efficiency of the reaction.

• It is the reactant that is present in excess and does not limit the reaction.

• It is the reactant that is consumed first and has no effect on the reaction rate.

• It is the reactant that is used to speed up the reaction process.

What is the percent yield if the theoretical yield is 12.3 g and the actual yield is 10.1 g?

• 75.0%

• 82.1%

• 90.5%

• 65.3%

What is the difference between theoretical yield and actual yield?

• Theoretical yield is the calculated maximum amount of product, while actual yield is the amount obtained from the experiment.

• Theoretical yield is always greater than actual yield in every experiment.

• Actual yield is the maximum possible amount of product that can be produced.

• Theoretical yield refers to the amount of reactants used in the reaction.