Question
$H_{2} CO_{3} / NaHCO_{3}$ is a buffer system in the body. What effect the addition of an acid have on the ph of a solution that is buffered?a. The pH will rise. b. The pH will lower. c. The pH will not change. d. All of these are correct.
Step 1
This buffer system consists of carbonic acid ($H_{2} CO_{3}$) and sodium bicarbonate ($NaHCO_{3}$). Show more…
Show all steps
Your feedback will help us improve your experience
Bryan Lynn and 78 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
1. If H+ increases, which would combine with the H+ preventing a pH shift? 2. If H+ decreases, which would release H+ to counter a pH change? 3. Which of the following is true in a buffer system? (A) prevents pH from dropping. (B) prevents pH from rising. (C) maintains a neutral pH. (D) minimizes change in pH.
In the human body, a buffer system exists known as carbonic acid (H2CO3). When placed within an aqueous environment, carbonic acid will dissociate into bicarbonate (HCO3-) and hydrogen (H+) as shown below: H2CO3 <-----> HCO3- + H+ Which of the following statements regarding buffers and this buffering system is considered TRUE? The carbonic buffer will shift pH whether an acid or base is added to the system. When the blood environment experiences massive shifts of excess base, carbonic acid levels will increase instead of bicarbonate. When the blood environment becomes acidic and experiences acidosis, bicarbonate will react with excess acid and create more carbonic acid. The buffer carbonic acid will only shift pH when acid is added, but not when base is added.
$\mathrm{H}_{2} \mathrm{CO}_{3}+\mathrm{NaHCO}_{3}$ found in blood helps in maintaining $\mathrm{pH}$ of the blood close to $7.4 .$ An excess of acid entering the blood stream is removed by: (a) $\mathrm{HCO}_{3}^{-}$ (b) $\mathrm{H}_{2} \mathrm{CO}_{3}$ (c) $\mathrm{H}^{+}$ ion (d) $\mathrm{CO}_{3}^{2-}$ ion
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD