Molarity of Std. EDTA solution used      M

Part A - Determining the amount of Ca + Mg in the sample

Volume of hard water sample used      ml.

Trial #1 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Trial #2 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Trial #3 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Trial #4 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Part B - Determining the amount of Ca in the sample

Volume of hard water sample used      ml.

Trial #1 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Trial #2 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Trial #3 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Trial #4 :

Enter initial buret reading     ml.
Enter final buret reading       ml.

Click to calculate the ppm of Calcium and Magnesium in the sample

Part A - Determining the amount of Ca + Mg in the sample

Total moles of Ca + Mg (x 10^-4) for   

Trial #1

       

Trial #2

       

Trial #3

       

Trial #4

       

Average Total moles of Ca + Mg (x 10^-4)   

Part B - Determining the amount of Ca in the sample and, using average from Part A to determine the amount of Mg in sample

Trial #1

moles Ca (x 10^-4)         ppm Ca
moles Mg (x 10^-4)        ppm Mg

Trial #2

moles Ca (x 10^-4)         ppm Ca
moles Mg (x 10^-4)        ppm Mg

Trial #3

moles Ca (x 10^-4)         ppm Ca
moles Mg (x 10^-4)        ppm Mg

Trial #4

moles Ca (x 10^-4)         ppm Ca
moles Mg (x 10^-4)        ppm Mg

Average ppm Ca    
Average ppm Mg