6. What is the effect of increasing the concentration of a reactant in the reactant rate?A.) The rate of reaction increasesB.) The rate of reaction decreases7. Which of the following does not affect reaction rate?A.) Temperature8. How do catalysts speed up a chemical reaction?A.) The reaction becomes endothermicB.) The reaction becomes exothermicC.) Effective collision between reacting molecules is producedD.) An alternative pathway with lower activation energy is produced9. What is the order of reaction wherein the rate depends on the concentration of a single reactant raised to the first power?A,) First order reactions B.) Second order reactions10. What is the molal freezing point depression constant of water?A.) 1.86°C/mC.) The rate of reaction is not affectedD.) the rate of reaction may increase or decreaseB.) Nature of reactantC.) Surface areaD.) PressureC.) Zero order reactions D.) Both a and bB.) 0.512°C/mC.) 6.26 °C/mD.) 2.52°C/m

1.Reaction rate is the speed at which reaction procedes 2.Various factors affect rate of reaction.…

6. What is the effect of increasing the concentration of a reactant in the reactant rate? A.) The rate of reaction increases B.) The rate of reaction decreases 7. Which of the following does not affect reaction rate? A.) Temperature 8. How do catalysts speed up a chemical reaction? A.) The reaction becomes endothermic B.) The reaction becomes exothermic C.) Effective collision between reacting molecules is produced D.) An alternative pathway with lower activation energy is produced C.) The rate of reaction is not affected D.) the rate of reaction may increase or decrease B.) Nature of reactant С.) Surface areа D.) Pressure

6. What is the effect of increasing the concentration of a reactant in the reactant rate? A.) The rate of reaction increases B.) The rate of reaction decreases 7. Which of the following does not affect reaction rate? A.) Temperature 8. How do catalysts speed up a chemical reaction? A.) The reaction becomes endothermic B.) The reaction becomes exothermic C.) Effective collision between reacting molecules is produced D.) An alternative pathway with lower activation energy is produced C.) The rate of reaction is not affected D.) the rate of reaction may increase or decrease B.) Nature of reactant С.) Surface areа D.) Pressure

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter17: Equilibrium

Section: Chapter Questions

Problem 9CR

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Similar questions

a What happens to a reaction rate as temperature drops? Give two explanations for the change. State which one is more important and explain why. b How does a catalyst affect reaction rates? c Compare reaction rates when a given reactant concentration is high with the rate when the concentration is low. Explain the difference.
use the kineticmolecular theory to explain why an increase in temperature increases reaction rate.
How does an increase in temperature affect rate of reaction? Explain this effect in terms of the collision theory of the reaction rate.
A reaction is started by mixing reactants. As time passes, the rate decreases. Explain this behavior that is characteristic of most reactions.
Substances that poison a catalyst pose a major concern for many engineering designs, including those for catalytic converters. One design option is to add materials that react with potential poisons before they reach the catalyst. Among the commonly encountered catalyst poisons are silicon and phosphorus, which typically form phosphate or silicate ions in the oxidizing environment of an engine. Group 2 elements are added to the catalyst to react with these contaminants before they reach the working portion of the catalytic converter. If estimates show that a catalytic converter will be exposed to 625 g of silicon during its lifetime, what mass of beryllium would need to be included in the design?
If a textbook defined a catalyst as "a substance that increases the rate of a reaction," would that definition be adequate?
. What does the activation energy for a reaction represent? How is the activation energy related to whether a collision between molecules is successful?