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Topic: OH- ion concentration in an aqueous solution containing cadmium ions at 11.2 pH  (Read 3468 times)

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Offline mrmetaluk

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OH- ion concentration in an aqueous solution containing cadmium ions at 11.2 pH
« on: February 10, 2010, 05:00:53 PM »
Can any of you kind people please help me with the above question?

I have read some of the posts on calculating this type of equation but despite following the advice I cannot get what I believe is the correct answer. The solution contains cadmium 2+ ions at a 2.5 x 10-3 concentration.

I keep getting 1.585 x 10-11 which I don't think is right.

Thanks in advance for any help with this. I will be most grateful.

Gavin.

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Offline cliverlong

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Re: OH- ion concentration in an aqueous solution containing cadmium ions at 11.2 pH
« Reply #1 on: February 11, 2010, 04:04:31 AM »
Please show your working
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Offline mrmetaluk

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Re: OH- ion concentration in an aqueous solution containing cadmium ions at 11.2 pH
« Reply #2 on: February 22, 2010, 01:00:57 PM »
Thanks for your reply but I got a friend (who has a much better grasp of this than I do!) to go through it with me and show me where I was going wrong. The correct answer (If memory serves) was 1.585 x 10-3

Cheers,

Gavin.
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