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April 20, 2024, 08:27:58 pm
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Author Topic: Help Please With Chem  (Read 5535 times)  Share 

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krisyrocks

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Help Please With Chem
« on: September 09, 2013, 09:57:11 pm »
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Can you replace potassium nitrate with potassium hydroxide in a salt bridge? Why?

Thank you, thank you!
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krisyrocks

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Re: Help Please With Chem
« Reply #1 on: September 09, 2013, 10:07:49 pm »
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Anyone? 
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lzxnl

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Re: Help Please With Chem
« Reply #2 on: September 09, 2013, 10:21:58 pm »
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Hydroxide ions have poor solubility generally and will precipitate with many metal ions, like Fe(II), Fe(III), Zn(II), Cu(II) etc. It will therefore deplete the concentration of the metal ions and thus interfere with the normal operation of the cell.
Potassium nitrate is used as both potassium and nitrate salts are generally very soluble in water.
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krisyrocks

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Re: Help Please With Chem
« Reply #3 on: September 09, 2013, 10:44:24 pm »
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Thank you NLiu.  :)
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