Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 2, Problem 7MCQ
Summary Introduction
Introduction:
A solution is called as acidic if it
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A solution with a pH of 2 than a solution with a pH of 8.a. has less H+b. has more H+c. has more OH−
Which of the following ionizes
completely in solution and is
considered to be a strong acid?
Select one:
O a. NAOH
O b. HCL
O c. NH3
O d. H2CO3
O e. CH3COOH
In a base, the hydrogen ion concentration is ____ than the hydroxide ion concentration.
Chapter 2 Solutions
Microbiology: A Systems Approach
Ch. 2.1 - Explain the relationship between atoms and...Ch. 2.1 - Prob. 2AYPCh. 2.1 - Prob. 3AYPCh. 2.1 - Prob. 4AYPCh. 2.2 - Prob. 5AYPCh. 2.2 - Provide examples of cell components made from each...Ch. 2.2 - Prob. 7AYPCh. 2.2 - Prob. 8AYPCh. 2.2 - Name the nitrogen bases of DNA and RNA.Ch. 2.2 - Prob. 10AYP
Ch. 2.3 - Recall three characteristics common to all cells.Ch. 2 - The smallest unit of matter with unique...Ch. 2 - The ____ charge of a proton is exactly balanced by...Ch. 2 - Electrons move around the nucleus of an atom in...Ch. 2 - Bonds in which atoms share electrons are defined...Ch. 2 - Prob. 5MCQCh. 2 - Prob. 6MCQCh. 2 - Prob. 7MCQCh. 2 - Prob. 8MCQCh. 2 - DNA is a hereditary molecule that is composed of...Ch. 2 - Prob. 10MCQCh. 2 - Prob. 11TFCh. 2 - Prob. 12TFCh. 2 - Prob. 13TFCh. 2 - Prob. 14TFCh. 2 - Membranes are mainly composed of macromolecules...Ch. 2 - Support or refute the following statement: Double...Ch. 2 - Prob. 2CTQCh. 2 - Plant cell walk are composed of cellulose, a...Ch. 2 - Compare and contrast the kinds of chemical bonding...Ch. 2 - Prob. 5CTQCh. 2 - Prob. 1VCCh. 2 - Prob. 1CM
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- Using a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution? a. weakly acidic b. strongly acidic c. weakly basic d. strongly basicarrow_forwardFigure 2.12 A pH scale. Here, red dots signify hydrogen ions (H+) and blue dots signify hydroxyl ions (OH). Also shown are the approximate pH values for some common solutions. This pH scale ranges from 0 (most acidic) to 14 (most basic). A change of one unit on the scale corresponds to a tenfold change in the amount of H+ ions. Photos, JupiterImages Corporation. Figure It Out: What is the approximate pH of cola?arrow_forwardIf pond water has a pH of 5, the hydroxide concentration would be: a. 10-5M. b. 10-10M. c. 105M. d. 109M. e. 10-9M.arrow_forward
- When acids are added to a solution, the pH should ___________ . a. decrease b. increase c. stay the same d. cannot tell without testingarrow_forwardAll ions have at least one ________ select all that are correct. a. proton c. electron b. neutron d. all of the abovearrow_forwardwhich of the following is a characteristic of a buffer? a. The pH will go down significantly when H3O+ is added to the buffer b. The pH will go down very slightly when H3O+ is added to the buffer c. The pH will go up significantly when H3O+ is added to the bufferarrow_forward
- A solution with a pH of 6 has a ____ difference in H ion concentration than a solution with a pH of 10. If a solution has a concentration of 10^-7 OH ions, how many H ions does it have?arrow_forwardWhen comparing pH, a solution with a pH of 5 contains 100 times the amount of H+ when compared to a solution with a pH of 7.arrow_forwardThe solubility of KI is 50 g / 100 g of water at 20 °C. If 110 g of Kl are added to 200 g water A. All of the Kl will dissolve B. The solution will freeze C. the container of the solution will feel warm to the touch D. a saturated solution will form E. an unsaturated solution will formarrow_forward
- Substances those are partially dissolved in water are commonly known as اخترأحد الخيارات a. hydrophilic / hydrophobic b. false statement c. hydrophilic d. hydrophobic e. all given choices are incorrectarrow_forwardنقطة واحدة The pH value is calculated mathematically as the Log of the * .hydrogen ion (H+) concentration False True Oarrow_forwardWhich of the following materials will have the greatest effect on colligative properties of a solution? a. CH3CI b. NaCl c. (NH4)2SO4 d. CH3CH2OH O A O Darrow_forward
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