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1) Students are interested in quickly completing their lab experiments before going to lunch. What are 4 ways to increase the reaction rate below? Zn(s) + 2HCl(aq) H₂(g) + ZnCl₂(g) + heat

1) Students are interested in quickly completing their lab experiments before going to lunch. What are 4 ways to increase the reaction rate below? Zn(s) + 2HCl(aq) H₂(g) + ZnCl₂(g) + heat

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Reaction Rate Enhancement Strategies #### Question: **1) Students are interested in quickly completing their lab experiments before going to lunch. What are 4 ways to increase the reaction rate below?** \[ \text{Zn}_{(s)} + 2\text{HCl}_{(aq)} \leftrightarrow \text{H}_2_{(g)} + \text{ZnCl}_2_{(g)} + \text{heat} \] #### Explanation: To increase the reaction rate for the given chemical equation, students can apply the following methods: 1. **Increase the Concentration of Reactants:** - By increasing the concentration of hydrochloric acid (\(\text{HCl}_{(aq)}\)), there will be more reactant molecules available to collide and react, thus speeding up the rate of reaction. 2. **Increase the Temperature:** - Raising the temperature provides the reactant molecules with more kinetic energy, increasing the number of successful collisions per unit time and accelerating the reaction. 3. **Increase the Surface Area of Zinc:** - Using powdered zinc instead of a single lump of zinc increases the surface area available for the reaction. More surface area allows for more frequent collisions between zinc and hydrochloric acid molecules. 4. **Add a Catalyst:** - Introducing a catalyst to the reaction can provide an alternative reaction pathway with a lower activation energy, thus increasing the reaction rate without being consumed in the process. By implementing these strategies, students can effectively increase the reaction rate and complete their experiments more quickly.
Transcribed Image Text:### Reaction Rate Enhancement Strategies #### Question: **1) Students are interested in quickly completing their lab experiments before going to lunch. What are 4 ways to increase the reaction rate below?** \[ \text{Zn}_{(s)} + 2\text{HCl}_{(aq)} \leftrightarrow \text{H}_2_{(g)} + \text{ZnCl}_2_{(g)} + \text{heat} \] #### Explanation: To increase the reaction rate for the given chemical equation, students can apply the following methods: 1. **Increase the Concentration of Reactants:** - By increasing the concentration of hydrochloric acid (\(\text{HCl}_{(aq)}\)), there will be more reactant molecules available to collide and react, thus speeding up the rate of reaction. 2. **Increase the Temperature:** - Raising the temperature provides the reactant molecules with more kinetic energy, increasing the number of successful collisions per unit time and accelerating the reaction. 3. **Increase the Surface Area of Zinc:** - Using powdered zinc instead of a single lump of zinc increases the surface area available for the reaction. More surface area allows for more frequent collisions between zinc and hydrochloric acid molecules. 4. **Add a Catalyst:** - Introducing a catalyst to the reaction can provide an alternative reaction pathway with a lower activation energy, thus increasing the reaction rate without being consumed in the process. By implementing these strategies, students can effectively increase the reaction rate and complete their experiments more quickly.
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