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I think it is most important to know that strong acids dissociate completely while weak acids do not dissociate completely. To differentiate, a strong acid will have a lower pH than a weak acid at the same concentration. Other than that, I generally just memorize the most common strong acids and most common weak acids. Maybe Lavelle will give us more ways to differentiate between the two in a later lecture.
Hi! I think the best way to generally differentiate between a strong or weak acid would just be to memorize common weak acids and common strong acids. Although, between two acids we can determine which is stronger by looking at the strength of its bond which is dependent on its length. Because the strength of an acid is dependent on its ability to dissociate or ionize in a solution, a weaker bond in a molecule would indicate that it is stronger because it is able to dissociate more easily producing more H+ ions/protons. Hope this helps! :)
All you can really do is memorize the strong versus weak acids. There doesn't seem to be a clear trend in identifying them . For example, HCl and HBr are both strong acids and halogens, but HF is a halogen but not a strong acid. The same goes with strong bases and weak bases.
Another way to help differentiate between strong and weak acids is to remember that organic / carbon containing acids fall into the weak acid category. So acids such as Carbonic Acid, H2CO3 and Benzoic Acid, C6H5COOH are considered weak acids.
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