Question

which of the following reactions is exothermic a) H2 gas gives 2H gas b)C solide gives C gas c) 2Cl gas gives Cl2 gas d) H2O solid gives H2O liquid​

Answer 1

Answer:

The correct answer is c)

Explanation:

The change of matter from solid to gas or solid to liquid is a endothermic reaction

Answer 2

2Cl gas gives Cl2 gas reactions is an exothermic reaction.

Explanation:

• A chemical reaction that involves the release of energy in the form of heat or light is known as an Exothermic reaction.
• These reactions are just the opposite of endothermic reactions.
• These reactions are expressed in a chemical equation as: Reactants → Products + Energy.
• 2Cl gas gives Cl2 gas is an exothermic reaction.
• It is because all bond formations are exothermic.
• Hence, the correct answer among all the options is option c) 2Cl gas gives Cl2 gas.

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