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Q. Arrange in order of increasing acidic strength
Chemistry Question Image

IIT JEEIIT JEE 2004

Solution:

Carboxylic acid is stronger acid than ammonium ion, hence
-COOH(X) is most acidic. $_{Z(NH_3)}^{ \, \, \, \, \, +}$ is more acidic than $_{Y(NH_3)}^{ \, \, \, \, \, +}$
due to - / effect of -COOH on Z. Hence, overall acid strength
order is
X > Z > Y