In an addition reaction, which bond of the reactant is broken?
a. carbon carbon single bond
c. carbon carbon double bond
b. carbon hydrogen single bond
d. carbon hydrogen double bondin chemistry, a hydrogen bond is a type of attractive intermolecular force that exists between two partial electric charges of opposite polarity. [ although stronger than most other intermolecular forces, the hydrogen bond is much weaker than both the ionic bond and the covalent bond. ]

Option (c) is the correct answer.

Explanation:

A reaction in which two or more molecules combine together to result in the formation of a larger molecules then this type of reactions are known as addition reactions.

Usually compounds which contain a double bond undergo addition reactions.

For example, a compound with carbon-carbon double bond, carbonyl group, imine group etc undergo addition reaction.

Thus, we can conclude that in an addition reaction, carbon carbon double bond of the reactant is broken.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.