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Chemistry 4B: Worksheet 1 (1/23-1/30)This is the first in a series of worksheets intended to guide your learning of pertinent

information in the 4B course. The questions and exercises are organized according to

chapter. It would be wise of you to read the chapter prior to attempting the relevant

questions. This will allow you to determine the amount of information you understood

and retained from the chapter and it will allow you to assess what information you

should focus on in depth. I will post solutions to the worksheets the following weekend

from posting. !ll chapters are from "arris unless otherwise noted. If you have any

questions from the worksheet or in general feel free to e#mail me at

bmcnicholas$4%berkeley.edu "appy studying&

Chapter 0:

'xercise () *rovide definitions for the following key terms from the chapter

a. +ualitative !nalysis)

b. +uantitative !nalysis)

c. ,alibration ,urve)

d. -tandard -olution)

e. "omogeneous -olution)

f. "eterogeneous -olution)

Chapter 1:

'xercise () *rovide definitions and relevant equations for the following terms)

a. olarity)

b. olality)

c. 'lectrolyte)


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d. -olute)

e. -olvent)

f. /eight *ercent)

g. *arts *er illion)

h. *arts *er Billion)

i. 0ilution)

1. *rimary -tandard)

k. Back Titration)

l. 0irect Titration)

'xercise 2) 3egina eorge is analyzing her new nail polish for dibutyl phthalate 5olecular

/eight) 26$.74g8mol9 a chemical that can potentially cause reproductive issues. !fter analyzing(:m; 5assume an aqueous solution9 of the polish she finds that it contains


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In an unrelated experiment 3egina wants to produce her own 0B* by reacting n#butanol

564.(2g8mol9 with phthalic anhydride 5(4$.(g8mol9.

e. !ssuming these react in a two#to#one ratio what amount of each reactant is necessary to

produce


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c. *recision)

d. !ccuracy)

'xercise 2) *rovide the number of significant figures for the following numbers and for the

calculations provide the answer with the appropriate number of significant figures.

a. 7.


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'xercise 4) iven the following number perform the indicated operations on it and calculate the

uncertainty of the result. 2.:6$5 .27$

a. Take the logarithm of the number)

b. Take the natural logarithm of the number)

c. Take e to the power of the number)

Chapter 11:

'xercise () *rovide definitions for the following terms

a. ;ewis !cid)

b. ;ewis Base)

c. ,helating ;igand)

d. ,helate 'ffect)

e. onodentate ;igand)

f. ormation ,onstant)

g. asking !gent)


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h. Indirect Titration)

i. 0isplacement Titration)

1. asking !gent)

k. ,omplexometric Titration)

l. etal#Ion Indicator)

'xercise 2) "ow many protons are present on '0T! at the following p" values 5"int) Cou can

use a table&9

a. p"A:

b. p"A6

c. p"A>

'xercise 7) '0T! Titrations& Cou have a :


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c. The solution is then titrated with


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'xercise 4) Back titrations are sometimes necessary to analyze the amount of metal in a solution.

a. ive a reason why a back titration should be performed on a solution of a particularlydifficult metal.

b. 'xplain the method for performing a back titration.

Chapter 22:

+uick definition& /hat is the partition coefficient=

'xercise () Back to 3egina eorge& -ay the partition coefficient for 0B* is 2: for ethyl acetate

to water. !nswer the following questions for :


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d. Dow 3egina wants to test the efficiency of extraction based on number of extractions and

volume of extraction liquid. If she performs one extraction with :

chemistry+4b+worksheet+1

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