Please correct answer and don't use hand rating Based on the following energy diagram, the activation energy for the reaction represented is approximately 40 kcal.Energy (kcal)60-40-20-Select one:TrueO FalseProgress of reaction

80 Highest point Reactants( 40) Step 1:The activation energy is…

Answered: Based on the following energy diagram,…

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter21: Hydrocarbons

Section: Chapter Questions

Problem 2STP

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Draw an energy diagram graph for an endothermic reaction where no catalyst is present. Then draw an energy diagram graph for the same reaction when a catalyst is present. Indicate the similarities and differences between the two diagrams.
Sketch energy diagrams to represent each of the following. Label the diagrams completely and tell how they are similar to each other and how they are different. a. Exothermic exergonic reaction with activation energy b. Exothermic exergonic reaction without activation energy
Classify each of the following statements as true or false. aSome equilibria depend on a steady supply of a reactant in order to maintain the equilibrium. bBoth forward and reverse reactions continue after equilibrium is reached. cEvery time reactant molecules collide, there is a reaction. dPotential energy during a collision is greater than potential energy before or after the collision. eThe properties of a transition state are between those of the reactants and products. fActivation energy is positive for both the forward and reverse reactions. gKinetic energy is changed to potential energy during a collision. hAn increase in temperature speeds the forward reaction but slows the reverse reaction. iA catalyst changes the steps by which a reaction is completed. jAn increase in concentration of a substance on the right-hand side of an equation speeds the reverse reaction rate. kAn increase in the concentration of a substance in an equilibrium increases the reaction rate in which the substance is a product. lReducing the volume of a gaseous equilibrium shifts the equilibrium in the direction of fewer gaseous molecules. mRaising temperature results in a shift in the forward direction of an endothermic equilibrium. nThe value of an equilibrium constant depends on temperature. oA large K indicates that an equilibrium is favored in the reverse direction.
Sketch an energy diagram graph representing an exothermic reaction, and label the following. a. Average energy of reactants b. Average energy of products c. Activation energy d. Amount of energy liberated during the reaction
By which of the following mechanisms does a catalyst operate? a. It decreases the activation energy barrier for a reaction. b. It serves as a reactant and is consumed. c. It increases the temperature of a reaction. d. It increases the concentration of reactants.
Use Le Chteliers principle to predict the direction of equilibrium shift in the following equilibria when the indicated stress is applied: a. 2A+B+heatC; some A is removed. b. 2A+B+heatC+D; the system is cooled. c. N2O42NO2; some NO2 is removed.
Sketch an energy diagram graph representing an endothermic reaction, and label the following. a. Average energy of reactants b. Average energy of products c. Activation energy d. Amount of energy absorbed during the reaction
7-50 Draw an energy diagram for an exothermic reaction that yields 75 kcal/mol. The activation energy is 30 kcal/mol.
Consider the following equilibrium system. N2(g)+O2(g)2NO(g) a. Write the chemical equation for the forward reaction. b. Write the chemical equation for the reverse reaction.
In terms of collision theory, to which of the following is the rate of a chemical reaction proportional? (a) the change in free energy per second (b) the change in temperature per second (c) the number of collisions per second (d) the number of product molecules
Use Le Chteliers principle to predict the direction of the equilibrium shift in the following equilibria when the indicated stress is applied: a. Ag+(aq)+Cl(aq)AgCl(s); some Ag+ is removed. b. 2HI(g)+heatH2(g)+I2(g); the system is heated. c. 6Cu(s)+N2(g)+heat2Cu3N(s); the system is cooled and some N2 is removed.
. Consider the exothermic reaction CO(g)+2H2(g)CH3OH(l)Predict three changes that could be made to the system that would decrease the yield of product over that produced by a system in which no change was made.

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Based on the following energy diagram, the activation energy for the reaction represented is approximately 40 kcal. Energy (kcal) 60- 40- 20- Select one: True O False Progress of reaction