Interpretation:
From the given options, the effects of increasing temperature at which a
Concept Introduction:
Rate of a Chemical Reaction:
It is the rate of change of concentration of reactant or product per unit time or it is expressed in by decrease in concentration of reactant or increase in concentration of product.
Factors affecting the rate of a chemical reaction:
- 1. Concentration of Reactants:
Rate of the reaction is directly proportional to concentration of the reactants.
c = concentration
n = order of the reaction
k = specific rate
- 2. Reaction Temperature:
Increase in temperature will increase the average kinetic energy of the reactant molecules. It is very easy for the molecules to move and thus makes the collision more effective. A large fraction of collisions will result in the product.
- 3. Presence of Catalysts:
Catalyst is a substance which can increase the rate of the reaction without altering the reaction. It will provide an alternative pathways for the reaction, thereby lowering the activation energy. For attaining equilibrium in a reversible process, the catalyst will lowers the activation energies of both forward and backward reactions.
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General, Organic, and Biological Chemistry
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- Which 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_forwardIn order for the reaction rate to rise the activation energy should be Select one: O O O O a. decreased b. increased c. decreased or increased d. not changed Riboflavin gives rise to cofactors:arrow_forwardWhich two of the following apply to the products of an exergonic reaction? A. Have less energy than the reactants B. Are less ordered than the reactants C. Are more ordered than the reactants D. Have more energy than the reactantsarrow_forward
- Which 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_forwardThis reaction is exergonic because the reactants have more potential energy than the products.arrow_forwardImagine you are working in a lab, and you are performing two chemical reactions. You notice that Reaction A occurs much faster than Reaction B, and that both reactions release the same amount of heat. Which of the following conclusions can be made from your observation? Reaction A has the same activation energy as Reaction B, and the AG of Reaction A is more negative (i.e., a larger negative number) than the AG for Reaction B. Reaction A has a lower activation energy than Reaction B, and the AG of Reaction A is the same as the AG of Reaction B. Reaction A has a higher activation energy than Reaction B, and the AG of Reaction A is the same as the AG of Reaction B. Reaction A has the same activation energy as Reaction B, and the AG of Reaction A is less negative (i.e., a smaller negative number) than the AG for Reaction B.arrow_forward
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