lecture8_040107 - Buffers Which of the following are good...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Buffers Which of the following are good buffers? a) 0.100M NaCl b) 0.100M NaCl, 0.100M NH 4 Cl c) 0.100M CH 3 NH 2 /0.150M CH 3 NH 3 + d) 0.100M HCl, 0.050 NaNO 2 a) No buffering ability b) No buffering ability c) Good buffer d) No buffering ability
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Polyprotic acids What is the pH of a 0.250M solution of H 2 SO 4 ? 1 st proton dissociation: 0.250M H 3 O + 2 nd dissociation: [HSO 4 - ][ H 3 O + S O 4 2- ] Initial 0.250 0.250 0 Change -x +x +x Equilibrium 0.250 – x x x pH = 0.583 pH = 0.602 Did not cover but still a good problem
Background image of page 2
Titrations 4 points during a titration: 1. No strong acid/base added z Weak acid or base problem 2. Before equivalence point z Buffer problem with neutralization. Determine moles
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/18/2008 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell University (Engineering School).

Page1 / 4

lecture8_040107 - Buffers Which of the following are good...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online