KVV E-Modules

What does the term "theoretical yield" refer to in a chemical reaction?

A: The amount of product obtained from an experiment B: The maximum possible amount of product calculated from the balanced equation C: The leftover reactant after a reaction D: The amount of reactant required to start the reaction

Which of the following is the correct formula for percent yield?

A: (Actual yield ÷ Theoretical yield) × 100 B: (Theoretical yield ÷ Actual yield) × 100 C: Actual yield + Theoretical yield D: (Reactant used ÷ Product formed) × 100

Which of the following could be a reason for a low practical yield?

A: Perfect reaction conditions B: Complete transfer of all substances C: Side reactions occurring D: 100% pure reactants

If a reaction has a theoretical yield of 25 g and an actual yield of 20 g, what is the …

A: 125% B: 80% C: 45% D: 20%

Why is it impossible to always achieve 100% yield in real-life chemical reactions?

A: Reactants are always impure B: Equipment is faulty C: There may be losses due to practical handling and side reactions D: Theoretical yield is not based on balanced equations