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Topic: Finding the pH with NH4F salt  (Read 13250 times)

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21385

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Finding the pH with NH4F salt
« on: February 06, 2008, 12:52:49 PM »
Calculate [H+] in 1.0 L of a solution that contains 0.200 M NH4F. For HF, Ka=7.2 x 10^-4 and for NH3, Kb=1.8 x 10^-5.
a) 6.3 x 10^-7 M b) 0.200 M c) 5.6 x 10^-6 M d) 2.1 x 10^-8 M e) 5.6 x 10^-10 M

I know how to find the [H+] for a salt that only has one acidic/or basic component but I don't know how to solve for a salt with two components that work against each other. Can someone help me?
Thanks

Borek

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Re: Finding the pH with NH4F salt
« Reply #1 on: February 06, 2008, 01:35:26 PM »
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

21385

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Re: Finding the pH with NH4F salt
« Reply #2 on: February 06, 2008, 06:27:06 PM »
Thanks a lot