Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 3, Problem 3IQ
a.
Summary Introduction
To determine: The amount of lactic acid (C3H6O3) present in 1 liter of a 0.5M solution of lactic solution.
Introduction: Molarity is the concentration of ‘n’ number of moles (mol) of solute per liter (L) of a solution.
b.
Summary Introduction
To determine: The number of lactic acid molecules in the given solution.
Introduction: Mole is the amount of substance that has a mass in grams numerically equivalent to its molecular mass. Molecular mass is the sum of the mass of all atoms in the molecule.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
explain step by step why the correct answer is C
For the amino acid tryptophan:
Draw its complete protonic equilibria. Indicate the net charge of each form and encircle the zwitterionic form. Provide labels (A, B, C, etc.) for each form.
b. Calculate the IpH of the amino acid.
c. At what pH range(s) it can act as a buffer?
d. What will be the predominant form(s) of the amino acid at pH (i) 1.5; (ii) 3.0; (iii) 4.5; (iv) 6.0; (v) 7.5 and (vi) 9.0?
The side chain of acetyl-L-lysine-OMe has a pKa=10.5 and its acid-dissociation reaction is shown below.
see attachment for Question D.
Chapter 3 Solutions
Study Guide for Campbell Biology
Ch. 3 - Draw the four water molecules that can...Ch. 3 - The following concept map is one way to show how...Ch. 3 - Prob. 3IQCh. 3 - Complete the following table to review your...Ch. 3 - Prob. 5IQCh. 3 - a. Add to the formula in Interactive Question 3.5...Ch. 3 - Fill in the following table, which summarizes the...Ch. 3 - To become proficient in the use of the concepts...Ch. 3 - Each water molecule is capable of forming a. three...Ch. 3 - The properties of water make it an ideal and...
Ch. 3 - What accounts for the movement of water up the...Ch. 3 - Climates tend to be moderate near large bodies of...Ch. 3 - You have three flasks containing 100 mL of...Ch. 3 - A burn from steam at 100C is more severe than a...Ch. 3 - Evaporative cooling is a result of a. the release...Ch. 3 - Prob. 8TYKCh. 3 - Prob. 9TYKCh. 3 - Prob. 10TYKCh. 3 - Prob. 11TYKCh. 3 - Prob. 12TYKCh. 3 - Prob. 13TYKCh. 3 - Consider two solutions labeled A and B. Solution A...Ch. 3 - What does a buffer do? a. moderates pH changes b....Ch. 3 - Prob. 16TYKCh. 3 - Prob. 17TYKCh. 3 - Prob. 18TYK
Knowledge Booster
Similar questions
- How many dissociable protons are present in Tris buffer? How did you come to this conclusion? Infer the pKa(s) of the dissociable protons in Trisarrow_forwardAt what pH does a lysine solution exhibit the highest buffering capacity? (Lysine pKas: pk1 = 2.2, pK2 = 8.95, pK3 = 10.5) %3D O рH 12.1 О рH 9.72 O pH 5.67 pH 8.95arrow_forwardGlycine hydrochloride (Cl− H3N+CH2COOH) is a diprotic acid that contains a carboxylic acid group and an ammonium group and is therefore called an amino acid. It is often used in biochemical buffers. Solve, In analogy with Figure , sketch the titration curve of this diprotic acid.arrow_forward
- Consider a buffer solution of acetate. The volume is 500 ml, the concentration is 200 mM, and the pH is 5.0. a. How many total moles of acetate plus acetic acid are present in the solution? Express answer as x.y with one digit before and one after the decimal place. b. What is the ratio of acetate ions (Ac-) to acetic acid ions (HAc) in the buffer solution (pH 5.0) if the pka is 4.76? Express the answer as x.yz with one digit before and two after the decimal place. c. How many moles of acetate are present in the solution? Express your answer to one decimal place. d. How many moles of acetic acid are present in the solution? Express your answer to one decimal place.arrow_forwardUsing chemical equations, explain how bicarbonate ion and carbonic acid function as a buffer pair.arrow_forwardDefine the following:- pH- Buffer- pKaarrow_forward
- Angiotensin Converting Enzyme (ACE) is the target of ACE inhibitors such as captopril that are used therapeutically to control blood pressure. The enzyme ACE converts angiotensin I to angiotensin II. Angiotensin II is an octapeptide with the sequence Asp-Arg-Val-Tyr-Ile-His-Pro-Phe. What will its net charge be at pH 7? A) -2 B) -1 O C) O D) +1 E) +2arrow_forwardthe pH of a solution is decreased from 9 to 8, it means that the A) concentration of H+ has decreased to one-tenth (1/10) what it was at pH 9. B) concentration of H+ has increased 10-fold (10X) compared to what it was at C) concentration of OH- has increased 10-fold (10X) compared to what it was at D) concentration of OH- has decreased to one-tenth (1/10) what it was at pH 9. E) Both B and D are correct. parrow_forwardIn the biological fluids, such as blood, name two biomolecules that can act as the buffering (1) (f) components. Explain how this is achieved.arrow_forward
- Bicarbonate/carbonic acid buffer in blood is an example of an equilibrium reaction that is meant to be very insensitive to change. How does the bicarbonate/carbonic acid buffer re-establish equilibrium if acidity increases? How does the bicarbonate/carbonic acid buffer re-establish equilibrium if alkalinity increases?arrow_forwardWhat is the pH of a 0.1 M phosphate buffer (pKa = 6.86) that contains 10 times more of the conjugate acid form than the conjugate base form? a.) 5.86 b.) 16.86 c.) -3.14 d.) 6.86arrow_forwardFor the amino acid arginine: Draw its complete protonic equilibria. Indicate the net charge of each form and encircle the zwitterionic form. Provide labels (A, B, C, etc.) for each form. b. Calculate the IpH of the amino acid. c. At what pH range(s) it can act as a buffer? d. What will be the predominant form(s) of the amino acid at pH (i) 1.5; (ii) 3.0; (iii) 4.5; (iv) 6.0; (v) 7.5 and (vi) 9.0?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
