Situation/Scenario Factor Affecting Reaction Rate 1. Protein is broken down in the stomach by the enzyme pepsin. 2. More bubbles appear when a concentrated solution of hydrochloric acid is added to a magnesium strip than when a dilute solution of the acid is added. 3. Raw potatoes are cut into thin slices for cooking. 4. Blowing air on a campfire to help get it going. 5. Grains of sugar dissolves quickly in water. 6. Smaller pieces of charcoal are used to grill food. 7. Meat is stored in a refrigerator to last longer. 8. Acid rain erodes marble faster. 9. Protease is used to tenderize meat. 10. Leaving a glass of milk on the table causes it to spoil easily.

Situation/Scenario Factor Affecting Reaction Rate 1. Protein is broken down in the stomach by the enzyme pepsin. 2. More bubbles appear when a concentrated solution of hydrochloric acid is added to a magnesium strip than when a dilute solution of the acid is added. 3. Raw potatoes are cut into thin slices for cooking. 4. Blowing air on a campfire to help get it going. 5. Grains of sugar dissolves quickly in water. 6. Smaller pieces of charcoal are used to grill food. 7. Meat is stored in a refrigerator to last longer. 8. Acid rain erodes marble faster. 9. Protease is used to tenderize meat. 10. Leaving a glass of milk on the table causes it to spoil easily.

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter18: Chemical Equilibrium

Section: Chapter Questions

Problem 79E

See similar textbooks

Similar questions

use the kineticmolecular theory to explain why an increase in temperature increases reaction rate.
Define these terms: (a) unimolecular reaction (b) bimolecular reaction (c) elementary reaction (d) overall reaction
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.
How does an increase in temperature affect rate of reaction? Explain this effect in terms of the collision theory of the reaction rate.
For the following reaction profile, indicate a. the positions of reactants and products. b. the activation energy. c. E for the reaction.
. Account for the increase in reaction rate brought about by a catalyst.
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?
Consider the following activation energy diagram. Which of the following statements about the diagram are true? (a) E a(forward)E a(reverse)(b) B represents the activation energy of the forward reaction. (c) Energy (H)for the reaction is AC. (d) E a(forward)=BA(e) E a(forward)=E a(reverse)C
Many conditions need to be met to produce a chemical reaction between molecules. What if all collisions between molecules resulted in a chemical reaction? How would life be different?