Chemistry 103/113 Laboratory

 

 

This Week

Answer Keys

Gen Chem Lab

Periodic Table

 

 

 

·       Build a Better Hot Pack

·       Quiz 5:  Photochemical Blues

 

Next Week

·       No lab meeting/nothing due, enjoy the holiday

   

 

Next Time

·       Expt: Acid-Base Titration

 

Notes for Today

The Calorimeter

 

When CaCl2 is Added to Water

    

 

The Temperature-Time Plot

What other information belongs on the plot?

 

 

Tasks for Today

·       Learn to use Logger Pro

·       Measure T for various masses of CaCl2

o   Graph T vs. mass CaCl2 with Excel

o   Find mass CaCl2 needed to heat hot pack water to 46 - 49oC

·       Calculate Hdissolving for CaCl2 (largest mass sample)

·       Design and test a hotpack

·       Complete all graphs/Temp-time plots; email them to yourself before leaving today.

 

 

After lab

·       Statistical analysis of class Hdissolving (reference: Study Assignment B)

·       Complete class Hdissolving data will be posted on Blackboard at end of lab

o   Data on lab whiteboard may be incomplete