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Interpretation:
The correct option for the given statement has to chosen.
Concept Introduction:
Collision theory:
Collision theory explains why different reactions occurs at different rates. It is used to explain or predict the
Activation Energy:
For a reaction to occur, the reactant molecules must collide with some minimum amount of energy. This minimum amount of energy for a reaction to occur is known as activation energy. Every reaction will have different activation energy. Activation energy is dependent on temperature. As the temperature increases, molecules will move faster and the activation energy decreases.
Temperature dependence on activation energy:
As the temperature increases, molecules will move faster therefore the molecules will collide easily. Activation energy will decrease as the temperature increases. Collisions become easier as the temperature increases.
Rate of a reaction and Activation Energy:
The equation which relates activation energy and rate constant is “Arrhenius Equation”
R is the gas constant
T is the temperature
A is the frequency factor
Taking the natural log of both sides, the equation will be like;
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Chapter 9 Solutions
GENERAL,ORGANIC,+BIO.CHEM.-MINDTAP
- Define the following terms: a. endothermic reaction b. exothermic reaction c. isothermic reaction d. spontaneous process e. nonspontaneous processarrow_forwardIdentify the conditions that may affect enzyme activity in a reaction. SELECT ALL THAT APPLY A. Increasing Temperature B. Decreasing Substrate C. Lack of coenzyme D. Decreasing pHarrow_forwardWhich of these statements concerning enzymes is correct? a. Enzymes increase the rate of reactions but are permanently changed as a result. b. Enzymes are proteins that function as catalysts. c. Enzymes increase the activation energy requirement for a reaction to occur. d. Enzymes usually can only double the rate of a chemical reaction. e. Enzymes increase the kinetic energy of the reactants.arrow_forward
- An enzyme __________ the activation energy required for a chemicalreaction.a. increases b. converts c. lowers d. catalyzesarrow_forwardWhich factor leading to increased reaction rates for enzyme catalyzed reactions involves removing the energetic cost of displacing solvent molecules interacting with reactants? Select one: a. electrostatic catalysis b. low-barrier hydrogen bonding c. proximity effects d. orientation effects e. induced fitarrow_forwardAnswer the following question using the reaction coordinàte diagram shown below. 280 240 200 160- 120- 80 40 Time How would the addition of a catalyst affect the reaction? A. The rate of reaction will increase because potential energy of the reactants is increased. B. Catalysts have no effect on reactions. O C. The rate of reaction will decrease because the activation energy is lowered. D. The rate of reaction will increase because the activation energy is decreased. Chp Co Heat content (H) kilojoulesarrow_forward
- Distinguish a term for a chemical reaction that has a positive ΔG. * A. Endergonic B. Exergonic C. Catabolism D. Metabolismarrow_forwardWhen an enzyme catalyzes a reaction… A. The pH changes B. Substrate concentration is reduced C. Product concentration is reduced D. Substrate concentration is increasedarrow_forwardWhich of the following is TRUE about the enzymatic catalysis of a chemical reaction? A. It increases the energy of the transition state B. It decreases the free energy ∆G so that a reaction can proceed spontaneously C. It decreases the energy of the transition state D. It increases the forward and reverse ratesarrow_forward
- Which of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formationarrow_forwardWhich statements concerning free energy change are true?a. Free energy change is a measure of the rate of a reaction.b. Free energy change is a measure of the maximum amountof work available from a reaction.c. Free energy change is a constant for a reaction under anyconditions.d. Free energy change is related to the equilibrium constantfor a specific reaction.e. Free energy change is equal to zero at equilibrium.arrow_forwardINSTRUCTIONS - Answer the following multiple-choice questions and EXPLAIN in 3-5 sentences why you chose that answer. Answer properly -arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
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