Indicate the incorrect statement from the following:
Correct answer: B. Theoretical yield is always lower than actual yield.
- A. A limiting reactant is consumed at the end of a reaction.
- B. Theoretical yield is always lower than actual yield.
- C. Stoichiometric calculations can only be done if no side reaction happens.
- D. The empirical formula and molecular formula of some compounds are the same.
Explanation
The correct answer is Option B. Theoretical yield is the calculated maximum amount of product that can be produced in a chemical reaction under ideal conditions, whereas actual yield is the measured amount obtained from the experiment, which is often less due to factors such as incomplete reactions or losses during recovery. Options A, C, and D are correct statements: a limiting reactant is entirely consumed, stoichiometric calculations can be performed despite side reactions, and some compounds indeed have the same empirical and molecular formulas.
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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