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)

Solution Cal data.png

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