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Hitunglah konsentrasi ion  dalam larutan  0,1 M;  ...

Hitunglah konsentrasi ion begin mathsize 14px style O H to the power of minus sign end style dalam larutan begin mathsize 14px style N H subscript 3 end style 0,1 M;  begin mathsize 14px style K subscript b equals 10 to the power of negative sign 5 end exponent end style

Jawaban:

begin mathsize 14px style N H subscript 3 open parentheses aq close parentheses and H subscript 2 O open parentheses l close parentheses equilibrium N H subscript 4 to the power of plus open parentheses aq close parentheses and O H to the power of minus sign open parentheses aq close parentheses K subscript b equals fraction numerator open square brackets N H subscript 4 to the power of plus close square brackets open square brackets O H to the power of minus sign close square brackets over denominator open square brackets N H subscript 3 close square brackets end fraction 10 to the power of negative sign 5 end exponent equals fraction numerator open square brackets O H to the power of minus sign close square brackets squared over denominator 0 comma 1 end fraction open square brackets O H to the power of minus sign close square brackets equals square root of 10 to the power of negative sign 6 end exponent end root open square brackets O H to the power of minus sign close square brackets equals 10 to the power of negative sign 3 end exponent space M end style

Dengan demikian, maka jawaban yang tepat adalah 0,001 M.

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