Prac help

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Lab
Posts: 12
Joined: 22 Aug 2006, 10:00
State/Location: NSW

Prac help

Post by Lab »

Help, need ideas for a prac. for water hardness in water. It was suggested to use phenolphthalein for this prac in place of EDTA. How do we do this? Thanks :wink2:
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rae
Posts: 1045
Joined: 31 May 2006, 10:00
School: Oxley College
Suburb: Burradoo
State/Location: NSW

Re: Prac help

Post by rae »

We use the Heinmann chemistry prac manual. There is a prac for the analysis of local water which includes a section on hardness of water. This prac uses EDTA and eriochrome black T. Are you interested in a copy I can fax it to you?

Lorrae
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Jazz
Posts: 468
Joined: 24 Jul 2006, 10:00
State/Location: NSW

Re: Prac help

Post by Jazz »

how about aquarium water hardness kit. it cost approximately $10, and you can add carbonate or bicarbonate to get different readings
Cheers Jazz
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Lab
Posts: 12
Joined: 22 Aug 2006, 10:00
State/Location: NSW

Re: Prac help

Post by Lab »

Thanks Lorrae, we have that prac, but was told about another. :clap3:
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