A buffer is 0.100 M in NH4Cl and 0.100 M NH3. When a small amount of hydrobromic acid is added to this buffer, which buffer component neutralizes the added acid?

A. NH4+

B. Cl-

C. NH3

D. None of the above

Question

Chemistry

Zachary Hebert

27 January, 17:23

A buffer is 0.100 M in NH4Cl and 0.100 M NH3. When a small amount of hydrobromic acid is added to this buffer, which buffer component neutralizes the added acid?

A. NH4+

B. Cl-

C. NH3

D. None of the above

+2

Answers (1)

Know the Answer?

Anderson Briggs · Answer 1

C. NH₃

Explanation:

This buffer is formed by a weak base (NH₃) and its conjugate acid (NH₄⁺) which comes from the salt NH₄Cl. When an acid is added (hydrobromic acid) it is neutralized by the basic component of the buffer, according to the following equation.

NH₃ (aq) + HBr (aq) ⇄ NH₄⁺ (aq) + Br⁻ (aq)

A buffer is 0.100 M in NH4Cl and 0.100 M NH3. When a small amount of hydrobromic acid is added to this buffer, which buffer component neutralizes the added acid?A. NH4+B. Cl-C. NH3D. None of the above

A buffer is 0.100 M in NH4Cl and 0.100 M NH3. When a small amount of hydrobromic acid is added to this buffer, which buffer component neutralizes the added acid?

A. NH4+

B. Cl-

C. NH3

D. None of the above