Which of the following describes an exothermic reaction?A.Hf, reactants = 0B.Hf, reactants = Hf, productsC.Hf, reactants > Hf, productsD.Hf, reactants < Hf, products
Question
Which of the following describes an exothermic reaction?A.Hf, reactants = 0B.Hf, reactants = Hf, productsC.Hf, reactants > Hf, productsD.Hf, reactants < Hf, products
Solution
An exothermic reaction is described by the option C. Hf, reactants > Hf, products.
This is because in an exothermic reaction, the energy of the reactants is greater than the energy of the products. The difference in energy is released, usually in the form of heat, hence the term 'exothermic'. The symbol Hf represents the enthalpy change of a reaction, so if the enthalpy of the reactants is greater than the enthalpy of the products, it means energy has been released, indicating an exothermic reaction.
Similar Questions
Give the general equation for an exothermic reaction. a reactants → products + energy b products → reactants - energy c products → reactants + energy d reactants → products - energy
Which of the following is/are examples of exothermic reaction? a. Burning of natural gasb. Electrolysis of waterc. Decomposition of vegetable into compostd. Decomposition of silver bromideOnly one correct answerA.Only aB.Only bC.a and bD.a and c
E. Mark each description as an exothermic or endothermic reaction. (2 points) Description Exothermic Endothermic A + heat B–ΔHEnergy diagram:Energy of reactants greater than energy of products
What defines an exothermic reaction?A.A reaction that relies on collisionsB.A reaction that produces heatC.A reaction that needs heat addedD.A reaction that possesses enthalpy
Which of the following is true for an exothermic reaction?Group of answer choicesHeat is taken in and ΔH is positiveHeat is taken in and ΔH is negativeHeat is given out and ΔH is positiveHeat is given out and ΔH is negative
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.