Stoichiometric calculations are not possible when:
Correct answer: D. Side reaction occurs
- A. All the reactants are completely converted into products
- B. Reversible reaction occurs
- C. In calculations, law of conservation of mass and law of definite proportions are obeyed
- D. Side reaction occurs
Explanation
Correct answer is D. A side reaction, also known as a secondary reaction, is a chemical reaction that occurs simultaneously with the desired or main reaction. These reactions can involve the reactants or products of the main reaction, leading to the formation of additional products or consumption of reactants. Side reactions can complicate stoichiometric calculations because they introduce additional chemical species that may not be accounted for in the balanced chemical equation.
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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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