Chemistry II For Dummies (For Dummies (Math & Science)) by Moore

Author:Moore
Language: eng
Format: mobi
Publisher: John Wiley and Sons
Published: 2012-06-08T04:00:00+00:00

0.500 M – x x x

The ionization of cyanic acid is an equilibrium and has an associated Ka. Notice that the cyanate ion, OCN-, appears in both equations. The presence of the weak acid (cyanic acid) indicates that this a Ka problem.

2. Find the Ka value.

You can get it from the pKa.

Ka = = 10-3.46 = 3.5 x 10-4

3. Write the Ka expression.

4. Show both sources of the cyanate ion in the equilibrium constant expression.

This problem has two sources of the cyanate ion. You get 0.750 M from the dissociation of the sodium cyanate and x amount from the ionization of the cyanic acid.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.