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### Topic: Homework Help: pH dilution  (Read 5286 times)

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#### g00ber

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##### Homework Help: pH dilution
« on: December 01, 2004, 09:05:55 PM »
What is the pH of the solution formed by diluting 25.0 mL of 0.40 M NaOH to a final volume of 2.00 L?

#### Mitch

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##### Re:Homework Help: pH dilution
« Reply #1 on: December 01, 2004, 11:19:50 PM »
You have to attempt the problem.
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#### AWK

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##### Re:Homework Help: pH dilution
« Reply #2 on: December 02, 2004, 01:20:27 AM »
Calculate a new concentration and take into account NaOH is a strong base.
AWK

#### bindy

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##### Re:Homework Help: pH dilution
« Reply #3 on: December 04, 2004, 02:48:34 AM »
if 0.4M NaOH means the quantity of matter,then C(hydroxyl)=0.4/2=0.2Mol/L
Ph=14-POH=14+lg0.2=13.3010

#### Donaldson Tan

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##### Re:Homework Help: pH dilution
« Reply #4 on: December 04, 2004, 08:17:25 PM »
What is the pH of the solution formed by diluting 25.0 mL of 0.40 M NaOH to a final volume of 2.00 L?

0.4M NaOH is diluted from 0.025L to 2L.

Concentration of diluted NaOH = 0.4 / (2/0.025) = 5 x 10-3