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Heidi
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#1
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#1
What experiments other than a titration can you use for finding the concentration of an acid or alkali?
Any replies will be appreciated
thanks
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elpaw
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wouldn't measuring the pH give you the concentration of H+, which should in theory give you the concentration of the acid/alkali?
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Ben.S.
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(Original post by elpaw)
wouldn't measuring the pH give you the concentration of H+, which should in theory give you the concentration of the acid/alkali?
You would need to know the (p)Ka for that.

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cobra
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Adding a strong base and measuring the amount of gas collected?
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qqqwwweee
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adding a reactive metal e.g. Zn, carbonate, or hydrogencarbonate in excess and measuring the volume of the gaseous product
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elpaw
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what if its an alkali?
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qqqwwweee
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(Original post by elpaw)
what if its an alkali?
add an excessive known amount of a strong acid and then find the concentration of the acidic solution
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Heidi
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(Original post by keisiuho)
adding a reactive metal e.g. Zn, carbonate, or hydrogencarbonate in excess and measuring the volume of the gaseous product
Hi Keisiuho,
could u please explain me the procedure you'd have to follow for measuring the volume of the gas?
Thanks so much.
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qqqwwweee
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(Original post by Heidi)
Hi Keisiuho,
could u please explain me the procedure you'd have to follow for measuring the volume of the gas?
Thanks so much.
Connect a closed side-arm flask to a gas syringe and then measure the volume. It is of course not an accurate methode as the gas may leak before you "close" the system and some reactants may not be reacted completely.
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vortex_199
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#10
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Using universal indicator, is a good way to find out if asubstance is an acid or alkaline.
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