PChem312 f20 w9

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Monday, Oct 12, 2020

Sec 3.7

Joule-Thomson Experiment

- isoenthalpic discussion/derivation

- JT coefficient

• heating as cooling on expansion/compression discussion

- Figure 3.5 - important

Sec 3.8

General discussion

Weds, Oct 14, 2020

Start Chapter 4

Thurs, Oct 15, 2020

1) Pulling the Tread...trailer

- I. CONSPIRACY THEORIES

- II. The Five Triggers of CONSPIRACY THINKING

• Fear and Loss
• Proportionality Bias
• Conformation Bias
• Patternicity
• The Kernel of Truth

- III. Prudent PARANOIA

- IV. INTUITIONISTS vs. RATIONALISTS

- V. The ILLUSION of UNDERSTANDING

- VI. THE STORIES WE TELL OURSELVES

2) Solution Calorimetry Lab Activity

3) Preparation of "Galeffi effervescente" drink

Friday, Oct 16, 2020

Review of Calorimetry data collection:

Experimental Data

collected by A. Trenttin (Fall 2020)

Note: some of the following values are estimates...you must use your values that show up in your lab notebook carbon copy.

Reaction 1 - data

NaOH (s) --> NaOH (aq)

- 3.51 g NaOH --> (40.00 g/mol) --> 0.0878 moles NaOH (s)

- ΔT = 34.4 - 22.0 = 12.4 ^oC

Reaction 2 - data

NaOH (s) + HCl (aq) --> NaCl (aq) + H₂O (l)

- 3.43 g NaOH --> (40.00 g/mol) --> 0.0856 moles NaOH (s)

- ΔT = 35.8 - 22.0 = 13.8 ^oC

Reaction 3 - data

NaOH (aq) + HCl (aq) --> NaCl (aq) + H₂O (l)

- 1.76 g NaOH --> (40.00 g/mol) --> 0.0440 moles NaOH (s)

- ΔT = 23.9 - 22.0 = 1.9 ^oC

Required Report

Solution Calorimetry Lab Activity