If internal energy of the system is increased ____________________?
Correct answer: D. All
- A. Change in state of the system is increased
- B. Temperature of the ystem may rise
- C. Chemical reaction may take place
- D. All
Explanation
An increase in internal energy can appear as a temperature rise, a change of physical state, or energy that enables a chemical reaction, depending on how the energy is distributed. Therefore all listed effects may occur, while students may choose only temperature because they assume every increase in internal energy becomes sensible heat.
Last updated
About Internal Energy
Internal energy is the total microscopic kinetic and potential energy of a system and is a state function. The first law, ΔU = q + w, connects changes in internal energy with heat and work, including sign conventions, expansion or compression and constant-volume processes.
Practise Thermochemistry and Energetics of Chemical Reactions
728 free Thermochemistry and Energetics of Chemical Reactions MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A system absorbs 100 kJ of heat and performs 50 kJ of work on the surroundings. The change in internal energy of the system is:
At constant volume the heat supplied is equal to:
Change in heat at constant volume is the measure of:
In a bomb calorimeter, the heat of reaction measured corresponds to the change in
Internal energy of a system is the