Expt. 10 – Natural Waters
Define water hardness and list two problems caused by hard water.
Be able to explain the chemistry behind the EDTA titrations.
Why do we need the buffer?
do we spike the samples with MgEDTA?
Write the reactions to help explain.
Given the results of an EDTA titration, be able to calculate water hardness in units of ppm CaCO
Explain the chemistry behind softening hard water using an ion exchange resin.
Provide a short paragraph that explains how Atomic Absorption (AA) spectroscopy works.
Relate the Beer-Lambert Law to AA analysis
Why did we need standard data (provided by the stockroom technicians) as part of our AA