BCH 341 - Spring 2020

Prof. Marcia Levitus

Screencasts

☑ General Videos

Dealing with units of R
Discussed in the context of the van der Waals equation

Taking derivatives
Discussed in the context of deriving the potential for a van der Waals interaction

Linear Regression in Google Sheets
Discussed in the context of kinetics


☑ Solved Problems

The numbers refer to the homework assignments that these examples relate to. Yellow: Midterm 1, Blue: Midterm 2, Green: Midterm 3.
Mouse over the problem statement icon to preview and click to print using your browser.

Problem statement

Watch Video

Force pushing atoms together
From lecture notes

  1  

Work by a variable force
From lecture notes (Set 2, slide 32)

  2  

PV work
Use w=–Pex ΔV to calculate work

  2  

PV work Example 2
Reversible heating of a gas at constant pressure.

  2  

PV work
Follow up from lecture notes. Discusses how to avoid rounding errors.

  2  

q, w, ΔU and ΔH of reversible heating of an ideal gas at constant pressure
Tinoco's textbook. Chapter 2, problem 7.

  2  

ΔU and ΔH of a reaction from tabulated ΔH values of formation
Uses Cp data to calculate ΔU and ΔH at another temperature.

  3  

ΔS and ΔH of a reaction from tabulated data
Uses Cp data to calculate ΔS and ΔH at another temperature.2020 STUDENTS: DISREGARD THE PART OF THE PROBLEM THAT ASKS YOU ABOUT CHANGE OF ENTROPY AT A TEMPERATURE DIFFERENT THAN 298K. The part of the problem that discusses ΔH is part of HW3. The part about entropy is part of HW4.

  3    4  

ΔS of mixing hot and cold water.

  4  

ΔG of ATP hydrolysis.

  5  

Calculation of ΔG°' from ΔG°.

  5  

Protein-Ligand binding equilibrium

  6   

pH of ammonium chloride (2020 students: Remember that you can solve systems of equations in your computer. This recording was prepared before we went online)

  7  

pH of sodium acetate (2020 students: Remember that you can solve systems of equations in your computer. This recording was prepared before we went online)

  7  

pH of ammonium chloride (2020 students: Remember that you can solve systems of equations in your computer. This recording was prepared before we went online)

  7  

First order kinetics

  10  

Activation Energy

  10