Acids & Bases

Of the following orders regarding basicity, which one is correct

Q: Of the following orders regarding basicity, which one is correct

(A) CH3CH2NH2 > PhCONH2 > CH3CONH2

(B) CH3CH2NH2 > PhCONH2 > CH3CONH2

(C) CH3CH2NH2 > PhCONH2 < CH3CONH2

(D) CH3CH2NH2 < PhCONH2 < CH3CONH2

Ans: (A)

The following equilibrium is established when hydrogen chloride is dissolved in acetic acid.

Q: The following equilibrium is established when hydrogen chloride is dissolved in acetic acid.

HCl + CH3COOH → Cl + CH3COOH2+

The set that characteristics the conjugate acid-base pair is

(A) (HCl, CH3COOH) and (CH­3COOH2+ and Cl)

(B) (HCl, CH3COOH2+) and (CH3COOH, Cl)

(C) (CH3COOH2+, HCl) and  (Cl, CH3COOH)

(D) (HCl, Cl) and (CH3COOH2+, CH3COOH)

Ans: (A)

Which of the following orders regarding acid strength is correct ?

Q: Which of the following orders regarding acid strength is correct ?

(A) HCOOH < CH3COOH < PhCOOH    

(B) HCOOH > PhCOOH > CH3COOH

(C) HCOOH > CH3COOH > PhCOOH    

(D) CH3COOH > HCOOH > PhCOOH

Ans: (B)

Which of the following species is an acid and also a conjugate base of another acid

Q: Which of the following species is an acid and also a conjugate base of another acid

(A) HSO4 

(B) H2SO4

(C) OH

(D) H3O+

Ans: (A)