What is a true statement about endothermic reactions?
Correct answer:
The definition of an endothermic reaction is that the products have higher energy than the reactants, resulting in a positive enthalpy of reaction.
Which statement is true concerning endothermic reactions? The change in enthalpy is equal to the energy absorbed by the reaction.
Solution : For an endothermic reactions is positive because in endothermic reaction heat is always absorbed.
In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products. Endothermic reactions are accompanied by a decrease in temperature of the reaction mixture.
An endothermic reaction is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur. A hallmark of this type of reaction is that it feels cold.
A reaction that absorbs energy is said to be endothermic. In an endothermic reaction, the starting materials (reactants) are more stable than the products; they are in a lower energy state. In order for the higher energy products to be formed, energy must be acquired from the environment.
An endothermic reaction absorbs energy during a chemical reaction. Among the choices, baking a cake is an example of an endothermic reaction.
Endothermic Reactions
A few examples of the endothermic process are photosynthesis, evaporating liquids, melting ice, dry ice, alkane cracking, thermal decomposition, ammonium chloride in water and much more.
Therefore, respiration and burning of a candle are examples of exothermic reaction whereas evaporation of water and melting of ice are examples of endothermic reaction.
Therefore, F−F is the most endothermic.
Which statement is true about the exothermic reaction?
Which condition is always true for an exothermic reaction? Explanation: When a reaction is exothermic ("exo-" meaning out and "-thermic" having to do with heat), it means that the reaction is giving off heat into the environment. Therefore, the reactants have a net heat loss throughout the process of the reaction.
Exothermic reactions absorb (take up) heat: The reactants have less potential energy than the products; D: Exothermic reactions can be used to produce energy (like heat and electricity). Both A and D are true: All of the above statements are true.
Which statement is true of energy in reactants during an endothermic reaction? The energy found in the reactants remains in the system, and the reactants also take energy from the surroundings.
Which event is endothermic? Iron reacts with oxygen in a chemical hand-warmer.
This means that in endothermic reactions some kinetic energy is converted to potential energy within the products' chemical bonds. The case is the opposite for the exothermic reactions. Overall, energy is released in exothermic and absorbed in endothermic reactions. Therefore, "a" is the correct statement.
Which statement is true for an exothermic reaction? It releases heat because the reactants have a higher energy than the products.
Option 2 is the correct answer: Decomposition reactions are always endothermic in nature. In a decomposition reaction, a chemical compound is broken into its constituent components. The process takes place through the breaking of bonds between the constituent atoms of the compound.
The chemical reaction in which the heat is absorbed is known as an Endothermic reaction. Examples are melting ice cubes and melting solid salts.
Answer and Explanation: Answer choice B is the correct response. Exothermic reactions result in the release of energy in the form of heat. The heat energy of the reactants is greater than the heat energy of the products.
Terms in this set (24)
Which of the following statements is not true for an exothermic reaction? The products have a higher heat content than the reactants.
Do endothermic reactions use heat?
An endothermic process absorbs heat and cools the surroundings.”
An exothermic reaction is a reaction that potential enthalpy of the products is less than the reactants whereas in an endothermic reaction the enthalpy of products is greater than that of the reactants. Exothermic reactions release energy when proceeding but endothermic reactions need to absorb energy to proceed.
When energy is released in an exothermic reaction, the temperature of the reaction mixture increases. When energy is absorbed in an endothermic reaction, the temperature decreases.
Melting ice cubes and conversion of frost to water vapor is an example of an endothermic reaction. Other examples of endothermic reaction is decomposition of ferrous sulphate.
Endothermic Reactions
A few examples of the endothermic process are photosynthesis, evaporating liquids, melting ice, dry ice, alkane cracking, thermal decomposition, ammonium chloride in water and much more. As the name implies, 'endo' means 'to absorb,' and 'thermic' means 'heat.'