Which statement is true?

Chemistry

2 answers:

AleksandrR [38]3 years ago

7 0

Exothermic reaction is where there is release of energy during a reaction

The enthalpy of exothermic reaction is negative

The relation between energy of products, reactants and enthalpy of reaction is

Enthalpy of reaction = sum of enthalpy of formation of products - sum of enthalpy of formation of reactants .

As enthalpy of reaction is negative, it means the enthalpy of products is less than the enthalpy of reactants so answer is :

In an exothermic reaction the energy of the product is less than the energy of the reactants.

forsale [732]3 years ago

7 0

An endothermic reaction is a reaction that absorbs heat from the surroundings. That means that the energy of the system must increase. Therefore, the answer must be C as the products should have higher energy than the reactants.

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In the molecular orbital model of cyclobutadiene, how many -antibonding molecular orbitals are there?

Citrus2011 [14]

There are one antibonding molecular orbitals present in molecular orbital model of c.

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