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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: shriram on November 06, 2004, 09:30:13 AM

Title: pH CONTROL
Post by: shriram on November 06, 2004, 09:30:13 AM

HOW MUCH ACID MUST BE ADDED TO BRING DOWN THE pH OF A DEMINERALISED WATER (1 LIT)FROM pH OF 6.8 TO pH 5.
ALSO HOW MUCH NaOH MUST BE ADDED TO THE I LIT DEMINERALISED WATER, TO  INCREASE THE pH TO 8 FROM 6.8?

Title: Re:pH CONTROL
Post by: AWK on November 10, 2004, 03:48:35 AM

Approximately 10^-5 moles of eg HCl and 10^-6 moles of NaOH