Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 2.5, Problem 1TYK
Summary Introduction
Introduction:
The pH is the measure of the concentration of hydrogen ions in a solution. If the concentration of H+ ions increases in a solution, the solution is said to be acidic with a pH of less than 7 and a lower concentration of H+ ions means the solution is alkaline with a pH of more than 7.
The carbonate pathway is the body’s mechanism to keep the pH balanced. The organs in the body can only function at a definite pH. Changing the pH of the body by consuming acidic or alkaline substances or by a synthesis of different compounds in the body can harm us if the pH is not restored back to normal. This is done by buffer systems in the body.
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Consider the following endothermic reaction at equilibrium:
H2(g) + Zn2+(aq) ⇌ Zn(s) + 2 H+(aq)
Which of the following disturbances will result in the reaction going forward to re-establish equilibrium? (Select all that apply.)
None of these
Correct Answer
Increase temperature at constant pressure.
Correct!
Add liquid water.
Decrease in partial pressure of H2(g).
Decrease container volume at constant temperature.
Adding the strong acid, HNO3. (Consider any change in solution volume is negligible.)
Removing some solid zinc.
Adding the soluble salt, magnesium nitrate, Zn(NO3)2.
Adding the soluble salt, sodium sulfide, Na2S.
When the following equation of a redox reaction in acidic solution is properly balanced, what are the coefficients for Cr2O72–, Fe2+ H+, Cr3+, Fe3+, and H2O, respectively?
__Cr2O72– + __Fe2+ + __H+ --> __Cr3+ + __Fe3+ + __H2O
(A) 1, 3, 14, 2, 3, 7;
(B) 1, 6, 14, 2, 6, 7;
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(D) 2, 12, 28, 4, 12, 14
discuss the following statement: “Whether the ΔG for a reaction is larger, smaller, or the same as ΔG° depends on the concentration of the compounds that participate in the reaction.”
Chapter 2 Solutions
Principles of Biology
Ch. 2.1 - Prob. 1TYKCh. 2.1 - Prob. 2TYKCh. 2.2 - Which of the following is a compound? Na Na+ O2 HF...Ch. 2.2 - How many additional covalent bonds are available...Ch. 2.3 - Prob. 1TYKCh. 2.4 - When oil dissolves in detergent micelles, where is...Ch. 2.4 - The amount of heat required to convert 1 mol of...Ch. 2.4 - The molecular formula of table sugar (sucrose) is...Ch. 2.5 - What is the OH- concentration at pH 8?Ch. 2.5 - Prob. 1TYK
Ch. 2.5 - The pH of a solution is defined as H+ the...Ch. 2 - ____________________ make up the nucleus of an...Ch. 2 - Living organisms are composed mainly of which...Ch. 2 - The ability of an atom to attract electrons in a...Ch. 2 - Hydrogen bonds differ from covalent bonds in that...Ch. 2 - During the formation of ions the atomic numbers of...Ch. 2 - Chemical reactions in living organisms may...Ch. 2 - Solutes that easily dissolve in water are said to...Ch. 2 - The molecular mass of glucose is about 180 g mole....Ch. 2 - The sum of the atomic masses of all the atoms of a...Ch. 2 - Prob. 10TYCh. 2 - Compare and contrast the different types of bonds...Ch. 2 - What is the significance of molecular shape, and...Ch. 2 - A principle of biology is that new properties...Ch. 2 - Prob. 1CBQCh. 2 - Discuss properties of water that make it possible...
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