enough of a monoprotic acid is dissolved in water to produce a 0.0111M solution. The pH of the resulting solution is 2.62. Calculate Ka for the acid.

Question

enough of a monoprotic acid is dissolved in water to produce a 0.0111M solution.  The pH of the resulting solution is 2.62.  Calculate Ka for the acid.

aaronq · Answer

Henderson-Hasselbach equation!

pH=pKa-log[A-]/[HA]

aaronq · Answer

sorry it's +log

anonymous · Answer

I'm sorry, can you please show me the step with the numbers?  I'm not quite used to doing these kind of equation...

aaronq · Answer

dude i haven't done these in a while, would you mind if i just sent you a vid and you can figure it out?

anonymous · Answer

sure, anything would do, thanks!

aaronq · Answer

sorry you don't even need that equation, here you go though http://www.youtube.com/watch?v=OA-f_8F5iNU

anonymous · Answer

thanks!