Chem 14- Experiment 10

Sampling Plan

 

Submitted by: Jarrod Cook

 

Date: October 7, 2004

 

Names of partners:       Jarrod Cook (Chem14-105B, TA: Nhan Pham)

Rachel Cox (Chem14-105B, TA: Nhan Pham)

                                    TJ Crooks (Chem14-105B, TA: Nhan Pham)

                                    Mark Conner (Chem14-105B, TA: Nhan Pham)

 

Waters to be sampled:  We will be taking samples from two lakes and two tributaries in both eastern and western PA.  Samples will be taken from Lake Erie and French Creek in Western Pennsylvania.  The other two samples will be taken from Lake Scranton and the tributary Roaring Brook in Eastern Pennsylvania.

 

My Sample:  My sample will be taken from the Lake Erie off of the Peninsula, which juts out into the lake from Erie, PA

 

Expected Results:  I expect that the samples taken from the rivers or tributaries will be “harder,” that is have a higher concentration of Ca2+ and Mg2+.  This expectation has been derived from the fact that these ions are picked up from the dissolving of Limestone and dolomite among others.  Since the running water is brought into closer contact with more Limestone that the still water it has a higher chance of picking up more of the dissolved Limestone.  The samples are being taken from different sides of PA this will reveal to us which area contains higher deposits of minerals such as limestone.   The entire region of Erie County consists of Silurian soil containing deposits of limestone.  Pennsylvanian and Mississippian soils, both of which contain limestone, surround the area near Scranton.  This information is taken from Geological maps provided by DCNR.  This means both areas have the potential to produce amounts of hard water.  The results will reflect the concentration of Ca2+ and Mg2+ containing minerals.

 

Thompson, Stephen; PSU Chemtrek. Hayden-McNeil Publishing, Inc., 11th edition: Plymouth, MI, 2004-2005, page 10-2

 

Geologic Map of Pennsylvania  http://www.dcnr.state.pa.us/topogeo Commonwealth of Pennsylvania Department of Conservation of Natural Resources.  Prepared by the Bureau of Topographic and Geologic Survey, Third edition: 1990(Revised in 2000).

 

Moore, John W.; Stanitski, Conrad L.; Jurs, Peter C. Chemistry- The molecular science. Harcourt College Publishers, 1st edition: Philadelphia, 2002, pages 169, 657,716-719,764,1008

 

Brown, Theodore L.; LeMay, H. Eugene; Bursten, Bruce E.; Burdge, Julia R. Chemistry – The Central Science.  Pearson Education, inc., Ninth Edition:  Upper Sadle River, New Jersey 07458, 2003, page 723