Jason Seidel

Tiff Scharadin

Spring of 2003

Acids

An acid is a material that can release a proton or hydrogen ion (H+)

Acids donate protons

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Bases

A base, or alkali, is a material that can donate a hydroxide ion (OH-)

Bases accept protons

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Neutralization

Acids are paired with bases

The neutralization of an acid and a base produces water and a salt.

Proton Exchange between Water Molecules

A proton leaves the first molecule and is accepted by the second. The first becomes a base and the second becomes an acid. The acid then donates a proton and the

base accepts the proton.

Ph

A neutral pH can be achieved by adding an equal amount of the acid solution to the base solution

List of commonacids and bases

Lowest (most acidic)

Highest (most basic)

Question 1 An acid…

A. donates protons.

B. loses protons.

C. takes over the world.

D. is the same as a base.

Answer 1A

Correct, go on to next question.

Answer 1B Incorrect, click here to go back and try

again.

Click here to go back and review.

Answer 1C Did you really think this was the correct

answer?

Click here to go back and try again

Answer 1D Acids cannot be bases.

Click here to go back and review.

Question 2 A base…

A. donates protons.

B. loses protons.

C. is one of three objects on a baseball field.

D. is the same as an acid.

Answer 2A Incorrect, click here to go back and try

again.

Click here to go back and review.

Answer 2B

Correct, go on to the next question.

Answer 2C This may be true, but this is chemistry

we are talking about.

Click here to go back and try again.

Answer 2D A base cannot be the same as an acid.

Click here to go back and review.

Question 3How many liters of a 1

molar base solution are needed to neutralize 1 liter of a 1 molar acid solution?

A. 0.5 liters

B. 2 liters

C. 1 liter

D. 1 ml

Answer 3A

Sorry, wrong answer. Go back and try again.

Answer 3B

Sorry, wrong answer. Go back and try again.

Answer 3C

Correct, go on to the next question!

Answer 3D

Maybe you weren’t watching your units. Go back and try again.

Question 4

Which has a lower pH, vinegar or household ammonia?

A. Vinegar

B. Household ammonia

Answer 4A

Sorry, the answer is household ammonia. Move on to the final question.

Answer 4B

You are correct, go on to the final question!

Question 5

Which has a higher pH, distilled water or cow’s milk?

A. Distilled water

B. Cow’s milk

Answer 5A

You are correct!

Answer 5B

Sorry, the answer is distilled water.

Work Consulted

Animation on slide 5 from

Picture on slide 7 from

http://www.bmb.psu.edu/courses/bisci004a/chem/phscale2.jpg

http://web.jjay.cuny.edu/~acarpi/NSC/7-ph.htm

The End

We hope you enjoyed our presentation and learned something new about acids and bases!