This is a question I get often: "How do I know if an acid (or base) is weak or strong? Fortunately, there is a simple answer to that question
Most acids and bases are weak, meaning that they do not completely dissociate into its ions, when we place them in solution. Only a few acids and bases are strong. Therefore, the key to master this topic is to learn the list of strong acids and bases that you can find below. If you are presented with an acid or base that is not on this list, that means that acid or base is weak. Is that simple!
The STRONG acids are...
HCL = hydrochloric acid
HBr = hydrobromic acid
HI = hydroiodic acid
HNO3 = nitric acid
H2SO4= sulfuric acid
HClO3 = chloric acid
HClO4= perchloric acid
And the STRONG bases are...
LiOH = lithium hydroxide
NaOH = sodium hydroxide
KOH = potassium hydroxide
RbOH = rubidium hydroxide
CsOH = cesium hydroxide
Ca(OH)2 = calcium hydroxide
Sr(OH)2 = strontium hydroxide
Ba(OH)2 = barium hydroxide
For example, is nitrous acid (HNO2) weak or strong? If we look at the list of acids, this one is not on the list, Therefore, nitrous acid is a weak acid
I hope this tip helps you understand this topic better! Please leave your comments and suggestions, and also let me know which chemistry topics would you like to read about. I have many tips to share with you, so I look forward to your comments, thanks for reading my blog and have a wonderful week!
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