Topic: pH Question anyone?? (Read 3863 times)

arbz101 · « **on:** April 13, 2009, 10:51:27 PM »

Determine the pH of 1.7×10^−5 M C6H5NH2(aniline)..

nj_bartel · « **Reply #1 on:** April 14, 2009, 12:12:45 AM »

you need the pka of the conjugate acid of aniline or the pkb of aniline

AWK · « **Reply #2 on:** April 14, 2009, 01:14:06 AM »

Take also the autoprotolysis of water into account

nj_bartel · « **Reply #3 on:** April 14, 2009, 01:24:11 AM »

Pretty sure aniline's a strong enough base that that would be negligible - unless you went to like 5+ decimal places

Borek · « **Reply #4 on:** April 14, 2009, 03:48:21 AM »

Pretty sure aniline's a strong enough base that that would be negligible

No.

nj_bartel · « **Reply #5 on:** April 14, 2009, 08:50:45 AM »

Sorry - was mixing up the pka of the conjugate acid and the pkb. Carry on