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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Textbook Question
Chapter 2.5, Problem 2TYK
The pH of a solution is defined as
- the logarithm of the concentration
- the negative logarithm to the base 10 of the
- the concentration of hydrogen ions in a solution
- the inverse of the concentration of hydrogen ions in a solution
- the negative logarithm to the base 10 of the
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When you dissolve Sodium Phosphate Dibasic in water, the resultant solution is ____________, because _____________.
Basic; the dibasic phosphate ion further takes up a H+ from the solution, thereby lowering the pH of the solution.
Basic; the dibasic phosphate ion further takes up a H+ from the solution, thereby increasing the pH of the solution.
Acidic; the dibasic phosphate ion further dissociates to lose a H+, thereby lowering the pH of the solution.
Acidic; the dibasic phosphate ion takes up one H+ from the solution, thereby reducing the pH of the solution.
A solution with a pH of 2 has a hydrogen ion concentration that is _______________ the hydrogen ion concentration of a solution with a pH of 4. (a) 1/2 (b) 1/100 (c) 2 times (d) 10 times (e) 100 times
Which of the following statements is true? a. Acids and bases cannot mix together. b. Acids and bases will neutralize each other. c. Acids, but not bases, can change the pH of a solution. d. Acids donate hydroxide ions (OH–); bases donate hydrogen ions (H+).
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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- 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_forwardIn ________ reactions, small molecules are linked by covalent bonds, and water can also form. a. hydrophilic b. hydrolysis c. condensation d. ionicarrow_forwardThe pH of lemon juice is about 2.0, whereas tomato juice’s pH is about 4.0. Approximately how much of an increase in hydrogen ion concentration is there between tomato juice and lemon juice? a. 2 times b. 10 times c. 100 times d. 1000 timesarrow_forward
- All 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 statements is not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant atom in Earth’s atmosphere.arrow_forwardThe mutual attraction of opposite charges holds atoms together as molecules in a(n) _____ bond. a. ionic b. hydrogen c. polar covalent d. nonpolar covalentarrow_forward
- Manufacturers make carbonated drinks by forcing pressurized carbon dioxide gas into flavored water. A chemical reaction between water molecules and some of the CO2 molecules creates hydrogen ions (H+) and bicarbonate, which is a buffer. In your opinion, is this reaction likely to raise the pH of a soda above 7, or lower it? Give your reasoning.arrow_forwardThe mutual attraction of opposite charges holds atoms together as molecules in an _______ bond. a. ionic c. polar covalent b. hydrogen d. nonpolar covalentarrow_forwardAtoms share electrons unequally in an _______ bond. a. ionic c. polar covalent b. hydrogen d. nonpolar covalentarrow_forward
- Jenny mixes up a batch of pancake batter, then stirs in some chocolate chips. As she is waiting for the first few pancakes to cook, she notices the chocolate chips sinking to the bottom of the clear glass mixing bowl. The chocolate- chip batter is an example of a________. solvent solute solution suspensionarrow_forwardA salt does not release __________ in water. a. ions b. energy c. H+arrow_forwardA 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−arrow_forward
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GCSE Chemistry - Acids and Bases #34; Author: Cognito;https://www.youtube.com/watch?v=vt8fB3MFzLk;License: Standard youtube license