Each pre-class Podia question is based on the pre-class material and working through the pre-class material will help you formulate your response. Consider the problem and write down/draw out your solution in your class notebook. These questions are designed to hone your skills so that you can analyze and solve mastery problems you will encounter throughout the course.
Two days before the next whole-class session, the pre-class Podia question will become visible in Podia, where you can click on the prompt and submit your answer.
Submissions for pre-class Podia activities are due 1 hour before the start of your whole-class. Be sure to submit your response before the due time.
Day 25 Pre-Class Podia Activity
It is estimated that about 1/3 of the carbon dioxide released by combusting hydrocarbons dissolves into the oceans according to this process:
CO2(g) ⇌ CO2(aq)
The ΔrG for this reaction as a function of temperature is shown below.
- Using the graph, infer the numerical values, signs, and units of ΔrH and ΔrS for this process.
- Justify the signs of ΔrH and ΔrS by analyzing the changes in potential energy and molecular motion that occur when CO2 dissolves in water.
- Discuss whether the reaction is reactant-favored or product-favored at 25 °C.
- Sketch a graph that represents the variation of the equilibrium constant K for the reaction as a function of increasing temperature.
- How do the rate constants associated with the forward and reverse processes change as temperature increases?
- Carbon dioxide is a greenhouse gas and data shows that the global temperatures are increasing with an increasing amount of CO2 in the atmosphere. Based on your analyses, how could an increase in the ocean temperatures impact the amount of CO2 in the atmosphere?
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