NEET Chemistry First Law MCQ Question
What does the equation ∆U = q + w represent in the context of the First Law of Thermodynamics?
The change in internal energy of a system
The total heat content of a system
The energy required to start a reaction
The work done by a system during expansion
Correct Answer
Detailed Explanation
The equation ∆U = q + w mathematically states that the change in internal energy (∆U) of a system is equal to the heat added to the system (q) plus the work done on the system (w). This reflects the First Law of Thermodynamics, which emphasizes energy conservation.
Found an issue with this question?
Related Questions
More from First Law
More from
Calculate the Gibbs free energy change (∆G) for a reaction at 298 K if the enthalpy change (∆H) is -150 kJ/mol and the entropy change (∆S) is -400 J/m...
Using Hess's Law, calculate the standard enthalpy change for the reaction: C(graphite, s) + 2H2(g) → CH4(g), given the following reactions: 1) C(graph...
Which of the following statements about enthalpy is correct?