How to identify Acids/Bases

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904901860
Posts: 24
Joined: Mon Jan 08, 2018 8:16 am

How to identify Acids/Bases

Postby 904901860 » Wed Dec 05, 2018 9:19 am

Does anyone have any tips on how to identify an acid or base? I'm having trouble with this besides the strong acids and bases that we were recommended to memorize.

Andrew Sun 1I
Posts: 30
Joined: Fri Sep 28, 2018 12:18 am

Re: How to identify Acids/Bases

Postby Andrew Sun 1I » Wed Dec 05, 2018 9:20 am

If you are given a compound, identify the compound that loses an H+. For example, if in the reaction h3o+ becomes h2o, then you know that it lost a H+, or donated that. that compound will be an acid.

Julia Lee
Posts: 80
Joined: Fri Sep 28, 2018 12:29 am

Re: How to identify Acids/Bases

Postby Julia Lee » Wed Dec 05, 2018 10:46 am

Professor Lavelle went over in lecture that Alkali metals(group 1) oxides and hydroxides as well as Alkali Earth metal(group 2) oxides and hydroxides will be strong bases. Some examples he gave of these were Li2O, NaOH, Na2O, KOH, CaO, Ca(OH)2, Mg(OH)2.
A lot of strong acids have an element from the p block bonded to H for example HCl, HBr, HI, etc

904901860
Posts: 24
Joined: Mon Jan 08, 2018 8:16 am

Re: How to identify Acids/Bases

Postby 904901860 » Wed Dec 05, 2018 10:55 am

Andrew Sun 1I wrote:If you are given a compound, identify the compound that loses an H+. For example, if in the reaction h3o+ becomes h2o, then you know that it lost a H+, or donated that. that compound will be an acid.


Thank you, but how would I identify which compound would be the one that loses or gains an H+ I guess is what I am ultimately asking.

anishathomas
Posts: 35
Joined: Fri Sep 28, 2018 12:25 am

Re: How to identify Acids/Bases

Postby anishathomas » Wed Dec 05, 2018 11:01 am

Based on whether the molecule or atom gives off or wants to gain a H plus can help you determine whether it is more acidic or basic. Also if you think about the conjugate base or acid, and its relative strengths, that can help too.


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