dIrk

This page lists questions and answers that were posted by visitors named dIrk.

Questions

The following questions were asked by visitors named dIrk.

if 4 volumes of 0.1M monobasic potassium phosphate, KH2PO4, are mixed with 2 volume of 0.1 M dibasic sodium phosphate, Na2HPO4, what will be the pH of the mixture? What if 4 volumes of 0.1 M KH2PO4 are mixed with 8 volumes of 0.1 M ethanolamine base(pka=9...

Answers

The following answers were posted by visitors named dIrk.

what's the pKa?

pH= pKa + log 0.1M/0.1M what's the pKa value?

pH=7.20+log0.1M/0.1M pH=7.20

pH=7.20+log 0.2M/ 0.4M pH=7.20+(-0.30) pH=6.69 I'm heading in the right direction?

you know the pH of HNO3 to be 3.4 use pH=-log [] 10^-3.4= ?

Sorry the final pH of the mixture is 7.50, is that correct DrBob222?

the equation will look like this: pH=7.20+log 0.4/0.2 = 7.50 Yes?