NCERT · Class 11 · Chemistry · Chemical ThermodynamicsWhich of the following mathematical equations represents the First Law of Thermodynamics?
Step-by-Step Solution
According to the First Law of Thermodynamics, energy can neither be created nor destroyed. Mathematically, it is expressed as $\Delta U = q + w$, where $\Delta U$ is the change in internal energy, $q$ is the heat added to the system, and $w$ is the work done on the system.
Detailed Options Breakdown
Option : $\Delta U = q + w$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: $\Delta U = q - w$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Thermodynamics.
Option 2: $q = \Delta U - w$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Thermodynamics.
Option 3: $\Delta U = w - q$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Thermodynamics.
💡 Study Guide: This question tests core syllabus concepts from Chemical Thermodynamics. For formulas, key summaries, and mock exam reference guides, read the full Chemical Thermodynamics Revision Notes.