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2014-04-06T23:29:23+07:00
PH = 5
[H+] = 10^-5

[H+] = √(Kw/Ka M)

10^-5= √ {10^-14/10^-5) (g/53,5)mol/0,5L }

10^-10 = {10^-14/10^-5) (g/53,5)mol/0,5L }

g = 2,675 gram

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