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Experiment #11 Determination of Water Hardness

Autor:   •  January 27, 2016  •  Lab Report  •  622 Words (3 Pages)  •  2,371 Views

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Experiment #11 Determination of Water Hardness

Elizabeth Stassenko

1/21/16

Purpose:                                

  • ●  To become familiar with the concept of water hardness
  • ●  To practice a titration technique using a titrator
  •                                                                 
  • ●  To determine the hardness of the local water supply
  •                                                         

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Data and Observations:

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Questions                                                                                                        

 

A.  Based on the analysis of your local water, would you classify its hardness as soft, moderate, hard, or very hard? Explain your answer.

 

 I would describe my local water as soft because 3 ppm falls within the soft classification (0-60 ppm).  

 

 

 

B.   Approximately how much calcium would you ingest by drinking eight 8-oz glasses of your local water? Hint: 1oz (fluid ounce) = 29.57 mL.

 

 

I would ingest approximately 25.03 mg of calcium by drinking eight 8 oz glasses of my local water.

 

C.   Assume an average minimum daily requirement for calcium is 1,150 mg. Calculate what percentage of your daily requirements could be met by drinking 1.0 L of your local water.

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