Limiting Reactants and Percent Yield

Front

What is a limiting reactant?

Back

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

Front

How do you identify the limiting reactant in a reaction?

Back

To identify the limiting reactant, calculate the moles of each reactant and determine which one produces the least amount of product.

Front

What is theoretical yield?

Back

Theoretical yield is the maximum amount of product that can be produced from a given amount of reactants, based on stoichiometric calculations.

Front

What is actual yield?

Back

Actual yield is the amount of product that is actually obtained from a chemical reaction, measured after the experiment.

Front

How do you calculate percent yield?

Back

Percent yield is calculated using the formula: (Actual Yield / Theoretical Yield) x 100%.

Front

What is the mole ratio in a chemical reaction?

Back

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.

Front

What is the balanced equation for the reaction of magnesium and hydrochloric acid?

Back

Mg + 2HCl → MgCl2 + H2.

Front

If 6.00 g of HCl reacts with 5.00 g of Mg, which is the limiting reactant?

Back

HCl is the limiting reactant.

Front

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

Back

Percent yield = (10.1 g / 12.3 g) x 100% = 82.1%.

Front

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

Back

7.83 g of SOCl2 is produced.