Acids and Bases Quiz

A strong base is dripped into a buffered solution. What will happen as a large amount of base is added to the solution? A)` At first, the pH will not respond much. Then, when the buffering capacity is "used up," pH will decrease rapidly as more base is added. B) The pH will start to increase as soon as base is added, and will continue to increase until it reaches 14. C) The pH will start to decrease as soon as base is added, and will continue to decrease until it reaches 0. D) At first, the pH will not respond much. Then, when the buffering capacity is "used up," pH will increase rapidly as more base is added until some limit is reached.

Solution A has a lower concentration of H+ than solution B. Solution A is A) more acidic B) more basic C) more neutral

A substance with a pH of 4 is _______________? A) neutral B) acidic C) basic

What is the pH of bleach? A) very acidic B) slightly acidic C) slightly basic D) very basic

The pH of a solution is a measure of what in the solution? A) Potential energy B) Concentration of hydrogen ions C) Concentration of electrons D) Total concentration of all ions in a solution

What is the pH of lemon juice? A) very acidic B) slightly acidic C) slightly basic D) very basic

Buffers: _____________________________. A) make solutions more basic B) resist changes in pH C) make solutions more acidic

Which of the following is the strongest base? A) water, pH 7 B) black coffee, pH 5 C) ammonia, pH 12 D) baking soda, pH 8.5 E) stomach acid, pH 1

Solution A has a higher concentration of H+ than solution B. Solution A is A) more acidic B) more basic C) more neutral

You test soda (pH 2.5) with blue litmus paper. What color would you expect to see? A) Yellow B) Green C) Red D) Blue

Which of these is closest to a neutral pH? A) baking soda, pH 8.5 B) stomach acid, pH 1 C) ammonia, pH 12 D) black coffee, pH 5

A solution with a pH of 4 has how many H+ ions compared to a solution with a pH of 6? A) 100 times more B) 1000 times less C) 1000 times more D) two thirds as many E) 100 times less

You test bleach (pH 13) with red litmus paper. What color would you expect to see? A) Yellow B) Green C) Red D) Blue

Buffers do all of the following EXCEPT: A) Donate (provide) hydrogen ions to the solution when an base is added to the solution. B) Maintain a stable pH within a solution. C) Absorb excess hydrogen ions when an acid is added to a solution. D) Make a solution strongly acidic E) Help organisms maintain homeostasis.

You have a solution that has a pH of 8 and need it to be pH 5. What do you do? A) Add water B) Add a base C) Add an acid

The pH of a substance is determined by measuring the ____________ of the substance. A) electrical charge B) hydrogen ions C) chemical reactivity D) toxicity

A small amount of acid is added to a buffered solution. What will happen? A) The pH will increase rapidly after acid is added. B) The pH will decrease rapidly after acid is added. C) The pH will change very little, if at all. The buffer will donate extra hydrogen ions to the solution to keep the pH constant. D) The pH will change very little, if at all. The buffer will accept the hydrogen ions from the added acid, keeping pH constant.