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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Ime on January 04, 2008, 11:07:08 PM

Title: pH slowly change over a week
Post by: Ime on January 04, 2008, 11:07:08 PM

I would appreciate help with an experiment. I was mixing K2PtCl4 with  NaCl and DNA in water. pH changes from 6 to 3.5 in a week and it is not clear to me what would cause such a slow change since K2PtCl4 should easily dissociate into K2 and PtCl4. Can you please suggest possible reason for this slow decrease in pH.

Thanks.

Title: Re: pH slowly change over a week
Post by: FeLiXe on January 05, 2008, 07:47:51 AM

seems like HCl forms when your PtCl4^{2- decays}