Question

Arrange in order of increasing acidic strength

• A. X > Z > Y
• B. Z < X > Y
• C. X > Y > Z
• D. Z > X > Y

Answer 1

Answer: (A)

X > Z > Y

Answer 2

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