This preview shows page 1. Sign up to view the full content.
Unformatted text preview: In‐class Quiz Four Tuesday, March 11, 2014 H+, so that [H+] and [A–] are equal after the addition.) What is the new form of the equilibrium expression in terms of c and x? (c) The above should give a quadratic equation. Given that this is a weak acid, one can assume c >> x. Now, provide a simpler equation and solve for x in terms of c and Ka. (d) If c = 1 mol and Ka = 1 x 10–4, what is the pH of the solution from the above equation? Solutions 5. Configurational entropy in solids arises from the number of different ways we can arrange atoms on a lattice, assuming that atoms of the same type (element) are indistinguishable. (a) Is entropy an intensive or extensive variable? (Circle one) (b) Assume we can make an Au‐Cu alloy that is single phase across the entire composition rang...
View
Full
Document
This test prep was uploaded on 04/03/2014 for the course CHEM 1b taught by Professor Heath,rees during the Spring '13 term at Caltech.
 Spring '13
 heath,rees
 Organic chemistry, Hydrogenation

Click to edit the document details