Topic: ph word problem (Read 5356 times)

dathrilla · « **on:** May 25, 2006, 03:23:08 PM »

Hi!

I don't know how to find the ph level when adding two substances together...

the question is the following: 10 ml of water is added to 25ml of a solution of whom the pH is 2.3. What does the pH turn into?

Cordially,

Borek · « **Reply #1 on:** May 25, 2006, 03:42:18 PM »

Due to the reasons you are probably not yet aware off, this question has no answer. However, assuming oversimplified picture of the solution...

Think how H⁺ concentration will change when diluting solution, and how does H⁺ translate to pH.

dathrilla · « **Reply #2 on:** May 25, 2006, 03:50:42 PM »

Thanks for replying.

However, there is an answer of 2.44 pH proposed for this question.

I'm still not absolutely sure on how to resolve this problem; any indication would be highly appreciated Borek, I still have a few questions left in this genre. Thanks

Borek · « **Reply #3 on:** May 25, 2006, 04:46:18 PM »

pH = -log([H⁺])

so

[H⁺] = 10^-pH

Calculate [H⁺] in the solution of pH 2.3, calculate new concentration of H⁺ after dilution, calculate pH for the new solution.

dathrilla · « **Reply #4 on:** May 25, 2006, 05:01:38 PM »

Thanks bro, got it.

Have a good one...

Donaldson Tan · « **Reply #5 on:** June 03, 2006, 02:38:20 AM »

the essential assumption in solving this problem is the number of H+ ions is conserved.

Topic: ph word problem (Read 5356 times)

dathrilla

ph word problem

Borek

Re: ph word problem

dathrilla

Re: ph word problem

Borek

Re: ph word problem

dathrilla

Re: ph word problem

Donaldson Tan

Re: ph word problem

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