A50.00 ml sample of groundwater is titrated with 0.0750 m edta . if 10.30 ml of edta is required to titrate the 50.00 ml sample, what is the hardness of the groundwater in molarity and in parts per million of caco3 by mass? assume that ca2+ accounts for all of the hardness in the groundwater.
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Ответ:
Concentration = 1545 ppm
Explanation:
Hardness of the water is generally due to the presence of
in water.
At equivalence point
Moles of
= Moles of EDTA
Considering
Given that:
So,
It means that 0.01545 moles are present in 1 L of the solution.
Molar mass of
= 100 g/mol
The formula for the calculation of moles is shown below:
Thus, moles are:
Also, 1 g = 0.001 mg
So, mass = 1545 mg
Concentration = 1545 mg/L
1 mg/L = 1 ppm
So, Concentration = 1545 ppm
Ответ:
Hey There!
To solve this question remember that 1 mole of ammonia is equal to 17G of ammonia.
Using that, we first multiply 17 by 7 = 24
Then we multiply 7 by .27 = 1.89
Finally, taking those and adding them together gives you the answer...
25.89 grams :)
Have a great day, I hope I helped.
+ Brainliest & Five stars are always appreciated