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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: hamil on May 05, 2009, 04:58:00 PM

Title: pH of a strong acid.
Post by: hamil on May 05, 2009, 04:58:00 PM

My chemistry book shows that a 1M solution of HCl has a H+ ion concentration of 1X10^0. A 0.1 M solution has a H+ concentration of 1X10^-1. What would the concentration be if I had a 2M solution? I thought the ion concentration had to be less than 1X10^0?

Title: Re: pH of a strong acid.
Post by: Borek on May 05, 2009, 05:06:26 PM

No. And pH can be negative.

Title: Re: pH of a strong acid.
Post by: hamil on May 05, 2009, 06:40:20 PM

I think you are saying that a 10M solution of HCl would have a pH of -1?

Hmmm.  Learn something new every day.

Title: Re: pH of a strong acid.
Post by: Borek on May 06, 2009, 02:43:06 AM

Quote from: hamil on May 05, 2009, 06:40:20 PM

I think you are saying that a 10M solution of HCl would have a pH of -1?

Something like that. Although it is even more complicated in reality  :o