Chemistry 100                                                                                     Dunnivant

Exam 3                                                                                                Spring, 2005

 

Name (printed)  _____________________

 

Closed notes, closed book, closed Internet, closed neighbor!

 

I have neither given nor received aid on this exam.  __________________________

                                                                                                Signature

 

**NO SPARE PAPER IS ALLOWED OUT DURING THE EXAM.  YOU MAY NOT LEAVE THE ROOM OTHER THAN TO GO TO THE RESTROOM OR A SCHEDULED CLASS.

 

**POINTS WILL BE TAKEN OFF FOR SLOPPY WORK WHEN I CANNOT FIND YOUR ANSWER OR FIGURE OUT WHAT YOUÕRE DOING.

 

AvogadroÕs number = 6.022 x 1023 particles per mol

 

  1. (2 pts each)  Name or draw the structure for the following:

 

name a six carbon alkane:

 

 

draw the structure of a 8 carbon alkene with a ketone group

 

 

 

 

draw the structure of a 5 carbon aldehyde

 

 

 

 

draw an aromatic compound with a nitro and chloro substitution

 

 

 

 

draw the structure for 3 chloro 5 methyl 1 pentyne

 

 

 

 

 

 

  1. (15 pts)  Name and circle all of the functional groups in the following structures:

 


  1. ( 5 pts)  Considering all of the fresh water we have access to, where is the most plentiful source?

 

 

 

 

 

      (3 pts)  What is the least plentiful source of fresh water?

 

 

 

 

 

 

  1. (2 pts)  What property of water gives it its unique properties such as relatively high melting and boiling points, surface tension, and heat capacity?

 

 

 

 

 

 

 

 

 

 

(5 pts)  Explain (with drawing and words) how a surface active agent (surfactant) can break the surface tension of water.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (15 pts)  What quantity of heat in kJ is required to heat 100. g of ice at –50 oC to steam at 150 oC?

 

 

Heat of fusion of ice = 333 J/g

Heat of vaporization = 2260 J/g

 

State                            Specific heat J/g-K

Ice                                           2.1

Water                                       4.2

Steam                                      2.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (5 pts)  List the four major goals of water treatment.

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (15 pts)  NEATLY Draw a drinking water treatment plant for river water that requires softening and turbidity removal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  List five major goals of waste water treatment.

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (15 pts)  NEATLY draw a complete sewage treatment plant with an activated sludge biological unit. (no trickling filter unit)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (5 pts)  What are the environmental results of shifting from leaded to unleaded gasoline and using catalytic converters on our cars? (one page limit)