 |
|
| Browse | Ask | Answer | Search | Join/Login |
|
|
||||
|
Water hardness
Titration of Ca+2 and Mg+2 in a 50.00 ml sample of hard water required 23.65ml of 0.01205M EDTA . A second 50.00ml aliquot was made strongly basic with NaOH to precipitate Mg+2 as Mg(OH)2. The supernatant liquid was titrated with 14.53ml of the EDTA solution. Calculate:
(a) The total hardness of the water sample. Expressed as ppm. (b) The concentration in ppm of CaCO3 in the sample. (c) The concentration in ppm of MgCO3 in the sample. |
||||
Check out some similar questions!
I have a 3.5 gallon betta breeding tank. I used a ph decreaser on it and I dropped from 7.8 to 7.2 and its jumped back up again. It's a homemade tank and the water totally STINKS! I can't stabilize the ph and I know its not the decorations. Could it be water hardness? Pleeeeease help!
25.00mL of a tap water sample is titrated with 5.00 x 10^-3M EDTA solution.6.25mL is required to the endpoint .what is the hardness of the water in ppm
The calcium hardness of a water sample is found by complexation of Ca2+ with excess EDTA and back-titrating the excess with MgCl2. A known amount of EDTA (0.0100 M, 25.00 mL) is added to a 20 mL aliquot of the water sample. (Y is used to symbolise the EDTA molecule) Ca2+(aq) + Y4-(aq) <->...
My aquarium water tests out as very hard. I use well water that is in an area known for lime content. I add water to the tank that has been run through a Brita filter. Can I use aquarium salt to soften the water?
View more questions Search
| Question Tools | Search this Question |
Add your answer here.
|
