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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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HCL titration analysis
Q. Hi,
I need help with this, I have a 70 gals tank contain 30% HCl and DI water balance.I need to do a titration analysis to determine acid concentration to see how much acid addition I need for each week to maintain concentration. Can you show me how to do this type of calculation I am looking for titration data.
Thanks in advance.
plating shop - Houston, Texas
November 5, 2008
A. Hi Calvin, - Bielefeld, Germany ? Calvin, process supplier - Great Neck, New York |
Multiple threads merged: please forgive chronology errors and repetition 🙂
Q. I would like to know the method of finding out the concentration of the HCl in the pickling bath.
Normally when the iron removal rate is slow then we will change the acid. But would like to analyse the sample in lab for finding out the concentration percentage.
Please tell me the process
Thanks & Regards,
- Chennai, Tamilnadu, India
March 26, 2009
A. Sir:
Titrate with a strong base and use an indicator that changes color at a low pH.
Regards,
Galvanizing Consultant - Hot Springs, South Dakota, USA
Q. Hi sir
I work in a HDG plant, I'm a chemical engineer , I use the titration of HCl by NaOH to determine the HCl concentration in the pickling bath, but after a time the HCl conc. decrease and the FeCL2 increase, so by titration a dirty green precipitation formed (i think it is Fe(oH)2, so I can not get the titration end point
note:I repeat the titration with sod. carbonate and use a variety of reagents (ph. ph).methyl orange
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how can I overcome that problem
thanks sir
chemical eng - Cairo, Egypt
April 17, 2009
A. Sir:
Take a smaller sample of acid and dilute it more with distilled water. Use an indicator which has a dramatic change in color and at a low pH. Use more indicator as needed. If you still have problems get an analytical chemistry text and follow the method.
Regards,
Galvanizing Consultant - Hot Springs, South Dakota, USA
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