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Jessica Nunez 1I
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Postby Jessica Nunez 1I » Mon Dec 04, 2017 11:14 pm

I'm a little confused on how you would determine the pH given this information.

Rank the following solutions in order of increasing pH:
(a) 1.0 10^-5 M HCl(aq);
(b) 0.20 M CH3NH3Cl(aq);
(c) 0.20 M CH3COOH(aq);
(d) 0.20 M C6H5NH2(aq). Justify your ranking.

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Re: 12.67

Postby Chem_Mod » Tue Dec 05, 2017 12:57 am

If a strong acid, all acid makes H+, so usually concentration of monoprotic acid is concentration of H+ and you can use -log[H+] to find pH. For weak acids, you have to use the ICE chart and figure out the concentrations of each species at equilibrium to determine [H+].

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