# BCH 341 - Spring 2020

## ☑ General Videos

 Dealing with units of RDiscussed in the context of the van der Waals equation Taking derivativesDiscussed in the context of deriving the potential for a van der Waals interaction Linear Regression in Google SheetsDiscussed 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 togetherFrom lecture notes 1 Work by a variable forceFrom lecture notes (Set 2, slide 32) 2 PV workUse w=–Pex ΔV to calculate work 2 PV work Example 2Reversible heating of a gas at constant pressure. 2 PV workFollow 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