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November 23, 2014

Homework Help: chemistry

Posted by Mary on Tuesday, April 14, 2009 at 6:15pm.

How do you calculate the pH when the following substances are added to a buffer.(all of the solutions are at .10M conc.)
The buffer: 50mL NH3 + 50mL NH4NO3
1) 10mL buffer + 6mL water
2)10mL buffer + 5mL water +1mL HCl
3)10mL buffer + 6mL HCl
4)10mL buffer + 5mL water + 1mL NaOH

I'm really confused on how the equations are set up for these types of problems (buffer solns).I'm posting this for the third time and really need some help..
Thanks

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