Question 6D.13 7th edition

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Emma Randolph 1J
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Joined: Thu Sep 27, 2018 11:29 pm

Question 6D.13 7th edition

Postby Emma Randolph 1J » Fri Jan 18, 2019 3:43 pm

For this question, it asks to 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. How would I solve this ??

Nikki Bych 1K
Posts: 35
Joined: Thu Sep 27, 2018 11:16 pm

Re: Question 6D.13 7th edition

Postby Nikki Bych 1K » Fri Jan 18, 2019 6:25 pm

So first of all, ranking increasing pH means the most H+ ions first, because on the pH scale the more acidic (the more H+ ions) the lower the number. Second, you can do this by finding out the acidity of the solution. For strong acids you can assume complete dissociation, meaning H+ concentration will be the same as the acid, and for weak acids use ICE tables. Hope this helped!

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