8_Ch17_AqEquilibria_1

1m ch3coona add hcl add naoh how does the addion

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: stances that keep its pH fixed at 7.3 - important for life funcDons Buffer soluDons consist of either: buffers and <tra<ons 5 Buffers If a small amount of hydroxide is added to an equimolar solu<on of HF in NaF, the HF reacts with the OH- to make F- and water. Similarly, if acid is added, the F- reacts with it to form HF and water. buffers and <tra<ons 6 Quan<ta<vely Calculate the pH of a solu<on that is 0.1M CH3COOH and 0.1M CH3COONa Buffer Calcula<ons Consider the equilibrium constant expression for the dissocia<on of a generic acid, HA: HA(aq) H+(aq) + A-(aq) This is the HendersonHasselbalch equa<on. buffers and <tra<ons 8 pH of Buffer Calculate the pH of a soluDon that is 0.1M NH3 and 0.2M NH4Cl. buffers and <tra<ons 9 Example: What is the pH of a buffer that is 0.12 M in lac<c acid, CH3CH (OH)COOH, and 0.10 M in sodium lactate? Ka for lac<c acid is 1.4 10-4. buffers and <tra<ons 10 When Strong Acids or Bases Are Added to a Buffer... Addi<on of Strong Acid or Base to a Buffer 1. Determine how the...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online