What is the pK2 value for phthalic acid?

1 Answer
anor277
Dec 19, 2015

Well #pK_(a2)# will be more than #pK_(a1)#, but you are going to have to go digging on the interwebs.

Explanation:

Try this link. The potassium salt of pthalic acid, potassium hydrogen pthalate, is often used as primary standard for acid base titrations, in that the salt is high molecular mass, a solid, and is non-hygroscopic.

Why should #pK_(a2)# be greater than #pK_(a1)#?

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