Which one of the following statements is TRUE? Which one of the following statements is TRUE? A buffer is an aqueous solution co
mposed of two weak acids. A buffer resists pH change by neutralizing added acids and bases. A buffer can absorb an unlimited amount of base. A buffer does not change pH when strong acid is added. None of the above are true.
The correct answer is "A buffer resists pH change by neutralizing added acids and bases".
Explanation:
In chemistry, a buffer is defined as an aquoeous solution that resist pH changes. Buffers are comprised of a weak acid (HA) and its conjugate base (A−) in an equilibrium relation, which results in the buffer neutralizing added acids and bases. Buffers play a crucial role in living beings since they provide a relative stable environment for the cells in what is known as homeostasis.
A buffer resists pH change by neutralizing added acids and bases.
Explanation:
A buffer is an aqueous solution composed of two weak acids. False. A buffer is the mixture of a weak acid with its conjugate base or vice versa.
A buffer resists pH change by neutralizing added acids and bases. True. A buffer reacts with acid or base neutralizing, thus, pH change.
A buffer can absorb an unlimited amount of base. False. A buffer works just when ratio between substances in the mixture is 1:10.
A buffer does not change pH when strong acid is added. False. A buffer decreases change of pH by addition of acid or base but pH in a buffer change when acids are added.
