Asked in Premeth Test 23 — Chemical Kinetics and Chemical Equilibrium (25 March 2025) 2025

Energy is absorbed?

Correct answer: D. Both Options A and B are correct

  • A. In bond breaking
  • B. In endothermic reactions
  • C. In bond formation
  • D. Both Options A and B are correct

Explanation

Breaking bonds requires adding energy, the opposite process of forming new bonds always releases energy. Bond breaking is an endothermic process while bond formation is an exothermic process.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Exothermic and Endothermic Reactions

Exothermic reactions release heat to the surroundings and have negative enthalpy change, while endothermic reactions absorb heat and have positive enthalpy change. The topic uses energy profiles to identify reactants, products and activation energy, and includes bond energy, enthalpy diagrams, calorimetry and Hess's law for calculating overall heat changes.

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.

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

More Exothermic and Endothermic Reactions questions