Maleic Acid Vs Fumaric acid

[Rexspidy]

Compare the acidity between maleic Acid and fumeric Acid.Please explain it

[BabcockHall]

Why don't you attempt to explain it first? Then we can comment on it. A good place to start is to give the pK_a values and indicate the structural difference between the two.

[Rexspidy]

No I need the explanation based on Structure and deprotonation

If I don't have pka values then how can it be explained as on first deprotonation it shows maleic Acid stronger but if we go with second time deprotonation it shows reversible.

[Fuzzwood]

So, again, why don't you attempt it first?

[BabcockHall]

As a general rule discussion boards like this don't dump answers to questions. The participants help the OP help himself or herself. I suggest that you Google "Williams pK_a table" if you don't already have the values. If you do, what is the structural difference between the two? I am not sure what you mean about the second pK_a values.