CAMPBELL BIOLOGY: CONCEPTS & CONNECTIO
8th Edition
ISBN: 9781323457214
Author: Reece
Publisher: PEARSON C
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Textbook Question
Chapter 2, Problem 4TYK
A solution at pH 6 contains _____H+ than the same amount of a solution at pH 8.
a. 20 times more
b. 100 times more
c. 2 times less
d. 100 times less
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in a solution, the solvent is:
A) always a gas
B) always water
C) the substance that is dissovled
D) the substance in the Greatest amount
Which of the following would be most effective as a buffer?
A. pure water
B. a mixture of molecules that are bonded to each other with hydrogen bonds
C. a mixture of unbonded atoms
D. a mixture of molecules with ionic bonds that will break apart into ions
E. a mixture of nonpolar molecules
A pH of 3 is a. basic b. neutral c. acidicd. a buffer
Chapter 2 Solutions
CAMPBELL BIOLOGY: CONCEPTS & CONNECTIO
Ch. 2 - Fill in the blanks in this concept map to help you...Ch. 2 - Create a concept map to organize your...Ch. 2 - Changing the _____ would change it into an atom of...Ch. 2 - A solution at pH 6 contains _____H+ than the same...Ch. 2 - Most of the unique properties of water result from...Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - Prob. 7TYKCh. 2 - In what way does the need for iodine or iron in...Ch. 2 - Use carbon-12, the most common isotope of carbon,...Ch. 2 - In terms of electron sharing between atoms,...
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- 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 timesarrow_forwardYou have a buffer with a pH of 10. You add a little bit of weak acid. What most likely will happen? a) The pH goes to 7 b) The pH should stay at 10 c) The pH goes up to 11 d) The pH goes down to 9arrow_forwardWhich of the following is FALSE when the concentration of the buffer solution was increased? a. The buffer will be effective in resisting pH changes. b. There will be more weak acid components that can neutralize the added base. c. The solution will have a higher buffer capacity. d. There will be more weak base components that can neutralize the added base.arrow_forward
- 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−arrow_forwardA base a. has a value below 7 on the pH scale. b. is a chemical that adds hydrogen ions to a solution. c. has a value of 7 on the pH scale. d. is a chemical that absorbs hydrogen ions from a solution.arrow_forwardA solution at pH 7 is considered neutral because (a) its hydrogen ion concentration is 0 mol/L (b) its hydroxide ion concentration is 0 mol/L (c) the product of its hydrogen ion concentration and its hydroxide ion concentration is 0 mol/L (d) its hydrogen ion concentration is equal to its hydroxide ion concentration (e) it is nonpolararrow_forward
- Organic compounds: A) Aren't generally soluble in water B) Have lower boing points than inorganic compounds C) Form covalent bonds D) All of thesearrow_forwardImagine that you have a jar of syrup A and a plastic Ziploc bag of syrup B. You poke tiny holes in the bag and put it inside the jar. Where will water move? Hint: remember that water moves from the more watery area (high concentration of water) to the less watery area (low concentration of water). Water moves from the bag (B) to the jar (A) Water moves from the jar (A) to the bag (B)arrow_forwardWhich of the following are properties of water that make itimportant for living cells?(a) It is a polar molecule that can form solutions.(b) It has high surface tension.(c) It has a high specific heat.(d) It can participate in dehydration and hydrolysisreactions.(e) All of the above.arrow_forward
- A buffer system .... a) All options are correct b) Counteracts pH changes in a solution c) Does the blood protein work as d) Releases protons (H +) if pH increasesarrow_forwardWhich is NOT an appropriate factor in choosing solvents in a mixed solvent system? a. The two solvents must be inert. b. The two solvents must be immiscible. c. The solute must have varying solubility between the two solvents d. The solute must not react with the solventsarrow_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
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