Mole Concept and Some Basic Concepts of ChemistrymediumMCQ SINGLE

The Law of Conservation of Mass, proposed by Antoine Lavoisier, is universally valid for standard chMole Concept and Some Basic Concepts of Chemistry Chemistry Question

Question

The Law of Conservation of Mass, proposed by Antoine Lavoisier, is universally valid for standard chemical reactions but demonstrably fails to hold absolutely true for which of the following processes?

Answer: C

💡 Solution & Explanation

In nuclear reactions (fission and fusion), a measurable amount of mass is converted directly into energy according to Einstein's mass-energy equivalence equation ($E=mc^2$). Thus, the total mass of the reactants is strictly greater than the total mass of the products, violating the classical Law of Conservation of Mass.

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