Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134153742
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 7RQ
Define pH scale, acid, base, and buffer. How do buffers reduce changes in pH when hydrogen ions or hydroxide ions are added to a solution? Why is this phenomenon important in organisms?
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Define pH scale, acid, base, and buffer. How do buffers reduce changes in pH when hydrogen ions or hydroxide ions are added to a solution? Why is this phenomenon important in organisms?
What important role do buffers play in organisms? What prevents a strong acid or strong base from working as a buffer?
if pH level of solution changes from pH 5 to pH 2, how much acidity increased in that solution and why?
Chapter 2 Solutions
Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 2 - 1. Which of the following is false?
a. An element...Ch. 2 - Prob. 2MCCh. 2 - Isotopes are defined as a. atoms of the same...Ch. 2 - Molecules a. always consist of different elements...Ch. 2 - 5. Covalent bonds
a. link water molecules in...Ch. 2 - 1. An atom consists of an atomic nucleus composed...Ch. 2 - Prob. 2FTBCh. 2 - Prob. 3FTBCh. 2 - An atom with an outermost electron shell that is...Ch. 2 - Water is described as _____ because each water...
Ch. 2 - Based on Table 2–1 how many neutrons are there in...Ch. 2 - 2. Distinguish between atoms and molecules and...Ch. 2 - 3. Compare and contrast covalent bonds and ionic...Ch. 2 - 4. Explain how polar covalent bonds allow hydrogen...Ch. 2 - Why can water absorb a great amount of heat with...Ch. 2 - 6. Describe how water dissolves a salt.
Ch. 2 - Define pH scale, acid, base, and buffer. How do...Ch. 2 - Prob. 1ACCh. 2 - Prob. 2ACCh. 2 - You can now buy “whiskey stones” made of granite,...
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- Which solution is more acidic, one with a pH of 4 or a pH of 5? What is the concentration of H+ ions in each?arrow_forwardCalculate the pH of the solution that results following addition of 10 mL of 1 M NaOH to 40 mL of 1 M NH4Clarrow_forwardWhy can amino acids act as buffers in certain pH range? Refer to the structure of amino acids in your answer.arrow_forward
- Explain how a buffer solution manages to stabilize its pH against the addition of acids and bases?arrow_forwardWhen the concentration of H+ ions in a solution decreases, a buffer maintains the pH of a solution by?arrow_forwardWhich pH value indicates a solution that has more hydrogen ions that hydroxide ions? pH 9 pH 4 pH 7arrow_forward
- Define the terms acidic, basic, acid, and base. Also define pH and describe the relationship between pH and the H+ concentration of a solution.arrow_forwardWhat do buffers do? Describe a buffer system in the human body. Why is this important?arrow_forwardWhy is pH balance in water important?arrow_forward
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