The total energy of products in a chemical reaction is
Correct answer: A. Equal to reactants
- A. Equal to reactants
- B. More than reactants
- C. Always zero
- D. Less than reactants
Explanation
The total energy of products in a chemical reaction are equal to reactants according to the law of conservation of energy, which states energy cannot be created nor destroyed but can change its form from one form to another.
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About First Law of Thermodynamics
The first law states that energy is conserved, so the change in a system's internal energy equals heat supplied plus work done on the system, ΔU = q + w. Questions use sign conventions, expansion and compression work, state functions versus path functions, and the relation between internal energy and enthalpy.
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