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2002 Paper Q8(b)(ii) - HSN forum

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2002 Paper Q8(b)(ii)


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#1 Adam

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Posted 26 May 2006 - 07:47 PM

"What is the pH of the 0.0010 mol l-1 hydrochloric acid used in the experiment?"

This is probably really easy (only worth 1 mark) but I don't know how to do it. The answer is apparently 3. Can somebody please explain this? smile.gif

#2 ice_illusion

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Posted 26 May 2006 - 08:08 PM

The concentration is 0.0010 mol l-1 which is 1x10-3mol l-1. That means theres a hydrogen ion concentration of 10-3, which is a pH of 3.
Hope that helps.

#3 Adam

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Posted 26 May 2006 - 08:12 PM

QUOTE(ice_illusion @ May 26 2006, 09:08 PM) View Post
...which is 1x10-3mol l-1...

D'oh! I can't believe I didn't see that.

Thanks. smile.gif







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