Chemistry Questions

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Discussion Topic 1: Chemistry In Its Element (Podcast): https://www.chemistryworld.com/46.more
 

There is a lot of chemistry going on all around you. If you start  to observe a bit more intentionally, you will notice many new discoveries, articles, news stories, and breakthrough research happening everyday. And science can only be useful and keep moving forward if it is shared. 

For this topic, I want you to find a session of Chemistry In Its Element Podcast that is interesting to you and share it with the class. In your post, please include the following:

1. A proper APA citation of your podcast, including a direct link to it that we can visit.

2. A sufficient summary of the podcast in common language that could be understood by the general public.

3. Its implications for society, benefits, drawbacks, practicality, etc. This is where you discuss your personal thoughts regarding the podcast. 

4. Questions to your classmates that invite discussion and further the dialogue.

5. An embedded picture that is relevant to the discussion.

13.3.2 CIA Demonstration: The Synthesis of Nylon 
Question 1 of 13

What   is the name of the type of reaction that you see in this demonstration?   Describe IN YOUR OWN WORDS what happens, generally speaking, in this type of   reaction. Be detailed in your discussion.

There are two chemicals used in this reaction, 1,6-hexadiamine (which is in a water solution) and adipoyl chloride (which is in a hexane solution). Think back to what you learned in this course about solutions and intermolecular forces. Why don’t these to “mix” together (in other words, make a homogenous solution) when combined? Why do they separate into layers? Be clear and detailed in your response.

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13.3.2 CIA Demonstration: The Synthesis of Nylon 

What functional groups are the key players in this reaction? How so? Explain clearly and in detail.

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13.3.2 CIA Demonstration: The Synthesis of Nylon 

Explain, in as much detail as possible, why the nylon is only created at the INTERFACE between these two solutions.

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13.3.2 CIA Demonstration: The Synthesis of Nylon 

Write the reference in APA Format for the CIA Demonstration: The Synthesis of Nylon Thinkwell video.

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15.1.2 CIA Demonstration: Recrystallization 

Describe, in as much detail as possible, the process of recrystallization as a method for purification of a solid. How does it work? What do you do?

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15.1.2 CIA Demonstration: Recrystallization 

How do you make a “supersaturated” solution—what are the specific steps? How is this different than a “saturated” solution?

Describe SPECIFICALLY what happens when solute is added to a saturated solution. 

Describe SPECIFICALLY what happens when solute is added to an unsaturated solution.

Describe SPECIFICALLY what happens when solute is added to a supersaturated solution.

What is the role of vacuum filtration in this process of Recrystallization? How do you do it? Be detailed and specific, and include all steps.

Suppose we are dealing with calcium chloride as opposed to the chemical in the video. If a solution contains 70 g of calcium chloride per 100 g of water at 25 degrees Celsius, is the solution unsaturated, saturated, or supersaturated? Explain your answer.

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15.1.7 CIA Demonstration: Titrations

What type of reaction is the titration in the video? Be detailed and specific in order to receive credit.

     

    

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15.1.7 CIA Demonstration: Titrations

Write the BALANCED chemical reaction for the titration performed in this lab demonstration?

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15.1.7 CIA Demonstration: Titrations

What does this balanced equation tell us that is so important with respect to this particular lab exercise, and how do you mathematically use this information in this lab?

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15.1.7 CIA Demonstration: Titrations

What is the name of the special piece of glassware used in this titration exercise?

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15.1.7 CIA Demonstration: Titrations

Why use the special piece of glassware as opposed to a graduated pipette? How is it SPECIFICALLY used in this lab?

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15.1.7 CIA Demonstration: Titrations

In a titration, assuming it is carried out just like the one in this lab exercise, how do you determine the number of moles of base used? Explain in detail, showing all work.

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15.1.7 CIA Demonstration: Titrations

In a titration, assuming it is carried out just like the one in this lab exercise, how do you determine the number of moles of acid used? How do you then use this information to determine the concentration of the acid? Explain in detail, showing all work.

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15.1.7 CIA Demonstration: Titrations

How does the hydrogen ion (H+) [or the hydronium ion (H3O+)] and the hydroxide ion (OH-) fit into all of this? What is their role in this reaction?

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15.1.7 CIA Demonstration: Titrations

Where would the hydrogen ion (H+) [or the hydronium ion (H3O+)] and the hydroxide ion (OH-) come from?

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15.1.7 CIA Demonstration: Titrations

Suppose I wanted to calculate the pH of the acid used in this titration. The acid used in this specific example is a weak acid, which would normally require a more laborious mathematical approach to find the pH—one that is not covered in this class. However, for this question just assume that it is a strong acid in order to make the calculation easier as shown in your text. 
 

How (explain) can I use the results from this experiment to do this? What would the pH be in this case? Show all work.

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