Could any one tell me the process of experimentally increasing and deacreasing calcium concentration.

 

EDTA will be titrated with milk, water, and bodily fluid to find the Calcium concentration.

 

I need to alter the sample to either increase the concentration of calcium or decrease the concentraion and titrate the sample again with EDTA to find the new concentration of Calcium

in what? calcium cations? add some. calcium metal? add some. at saturation point? heat the solution, pressurize if solvent is volatile.

 

learn how to post, man

budelwegraph, this is obviosly his first post here, so dont give him a hard time. Please give more imformation.

is hard to understand his question. and wtas EDTA?

EDTA is a ligand. Some 'chelated' complexed ions have EDTA as ligands. I'm searching for the full name of EDTA, but can't find it anymore

And are you really going to use bodily fluids ?? At school ??

edta is ethylenediaminetetraacetic acid

 

you can alter concentration by adding/removing solvent.

Yeah, EthyleneDiamineTetraAcetic acid

 

Thanx, I hate it when I forget something like that

Could any one tell me the process of experimentally increasing and deacreasing calcium concentration.

 

EDTA will be titrated with milk, water, and bodily fluid to find the Calcium concentration.

 

I need to alter the sample to either increase the concentration of calcium or decrease the concentraion and titrate the sample again with EDTA to find the new concentration of Calcium

EDTA will not only attach itself to Ca cations but also the Mg and Al ions as well. So if you are specificly looking for the concentration of calcium cations then you will need to use another indicator. But if you are looking for total water hardness then the EDTA will work fine. To dilute the samples just use a volumetric flask and pipettte, dilute with distilled water.

 

~Scott

EDTA will not only attach itself to Ca cations but also the Mg and Al ions as well. So if you are specificly looking for the concentration of calcium cations then you will need to use another indicator. But if you are looking for total water hardness then the EDTA will work fine. To dilute the samples just use a volumetric flask and pipettte' date=' dilute with distilled water.

 

~Scott[/quote']

My Teacher told me that there is a good experimental way that i would be able to modify the calcium concentration of my sample that would be a litte more complicated than just adding distilled water. And i should modify it so i can predict the change it will make to the concentration. If you know other ways to change the concentration please let me know. THank you very much