Regents Chemistry Exam June 2022
8 Given the equation representing a reaction: Cl2 →Cl+Cl
What occurs during this reaction?
(1) Energy is released as a bond is broken.
(2) Energy is released as a bond is formed.
(3) Energy is absorbed as a bond is broken.
(4) Energy is absorbed as a bond is formed.
Explanation: When bonds are broken, energy is absorbed. When bonds are formed, energy is released. Cl2 bond is broken to create Cl and another Cl.
Answer: 3