Use the reaction and bond information to answer the question.
H2 + CO2 → CH2O2
Reactant bond energies: H–H is 432 kJ/mol, C=O is 799 kJ/mol
Product bond energies: C–H is 413 kJ/mol, C=O is 745 kJ/mol, C–O is 358 kJ/mol, O–H is 467 kJ/mol
Is this system endothermic or exothermic, and why?
(1 point)
It is exothermic because more energy is given off by the products versus the amount needed to break up the reactants.
It is endothermic because more energy is needed to break up the reactants versus the amount given off by the products.
It is endothermic because more energy is given off by the products versus the amount needed to break up the reactants.
It is exothermic because more energy is needed to break up the reactants versus the amount given off by the products.
Answers
Answer:
It is exothermic because more energy is given off by the products versus the amount needed to break up the reactants.
It is endothermic because more energy is needed to break up the reactants versus the amount given off by the products.
It is endothermic because more energy is given off by the products versus the amount needed to break up the reactants.
Explanation:
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Answer: It is exothermic because more energy is given off by the products versus the amount needed to break up the reactants.
Explanation:
A reaction that is chemical in nature and is characterized by the release of energy in the form of heat or light is called an exothermic reaction. Matching a light using a matchstick is one example of this type of reaction where the release is in the form of both heat and light.
Compared to an endothermic reaction, where energy is absorbed, the exothermic reaction leads to the release of energy. This energy is often higher than the combined energy of the reactants. In the above example of the matchstick, the flame produced as a result of matching gives out higher energy than compared to the potential energy of the matchstick.
The energy dissipated in an exothermic reaction is transferred into the surroundings. Therefore, the change in enthalpy (a quantity that measures the heat content of a system by calculating the change in energy) is negative in such a reaction.
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