Percent Yield

Front

What is Percent Yield?

Back

Percent Yield is a measure of the efficiency of a reaction, calculated as (actual yield / theoretical yield) x 100%.

Front

How do you calculate Percent Yield?

Back

Percent Yield = (Actual Yield / Theoretical Yield) x 100%.

Front

What is Actual Yield?

Back

Actual Yield is the amount of product that is actually produced when a reaction is carried out.

Front

What is Theoretical Yield?

Back

Theoretical Yield is the maximum amount of product that could be formed from a given amount of reactants, assuming complete conversion.

Front

In the reaction LiOH + KCl → LiCl + KOH, if 20.0 grams of LiOH produces 6 grams of LiCl, what is the percent yield?

Back

Percent Yield = (6 g / theoretical yield) x 100%. The theoretical yield is calculated based on stoichiometry.

Front

If 24 grams of CH4 produces 66 grams of CO2, what is the percent yield?

Back

Percent Yield = (Actual Yield / Theoretical Yield) x 100%. Here, Actual Yield = 66 g.

Front

What is the significance of a high percent yield?

Back

A high percent yield indicates that a reaction is efficient and that most of the reactants were converted into products.

Front

What does a percent yield of less than 100% indicate?

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A percent yield of less than 100% indicates that not all reactants were converted into products, possibly due to side reactions or incomplete reactions.

Front

In a lab, if a scientist expects to produce 12.3 grams of product but only collects 10.1 grams, what is the percent yield?

Back

Percent Yield = (10.1 g / 12.3 g) x 100% = 82%.

Front

What factors can affect the percent yield of a reaction?

Back

Factors include reaction conditions (temperature, pressure), purity of reactants, and the presence of side reactions.