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strong vs weak acids

Posted: Fri Dec 07, 2018 10:00 pm
by Shreya Tamatam 3B
How do you determine whether an acid is strong or weak?

Re: strong vs weak acids

Posted: Fri Dec 07, 2018 10:06 pm
by Nicholas Carpo 1L
You can determine relative acid strength based on two main factors:
1. bond length in relation to the acidic proton (longer bond, stronger acid)
2. resulting anion stability (more stable conjugate base, stronger acid)

But to differentiate strong acids vs weak acids, usually you have to just memorize the strong acids.
HCL, HBr, HI, HNO3, HClO3, HClO4 and H2SO4

Re: strong vs weak acids

Posted: Sat Dec 08, 2018 12:00 am
by lukezhang2C
Electronegativity is also a factor to consider!

Re: strong vs weak acids

Posted: Sat Dec 08, 2018 12:05 am
by Chloe Likwong 2K
Strong bases usually have (OH-) in the compound.

Re: strong vs weak acids

Posted: Sat Dec 08, 2018 12:55 am
by Andrew Bennecke
Aside from memorizing the several strong acids and patterns for strong bases, learning the different trends of the acids with a halogen and strength of a H atom in a H-bond can also help decide which molecule is more acidic or more basic when given two to compare.

Re: strong vs weak acids

Posted: Sat Dec 08, 2018 2:25 am
by Rebecca Park
There is a table in the textbook that is nicely organized, but for binary, the more polar, the stronger the acid and the more weaker the H-A bond, the stronger the acid.
For Oxoacids, the greater the number of Oxygen atoms attached to the central atom gives a stronger acid. If it has the same number of O atoms, then you use electronegativity.