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Hitunglah konsentrasi ion  dalam larutan HBrO 0,1 ...

Hitunglah konsentrasi ion begin mathsize 14px style H to the power of plus sign end style dalam larutan HBrO 0,1 M;  begin mathsize 14px style K subscript a equals 5 cross times 10 to the power of negative sign 9 end exponent end style

Jawaban:

begin mathsize 14px style H Br O equilibrium H to the power of plus sign and Br O to the power of minus sign K subscript a equals fraction numerator open square brackets H to the power of plus sign close square brackets open square brackets Br O to the power of minus sign close square brackets over denominator open square brackets H Br O close square brackets end fraction K subscript a equals fraction numerator open square brackets H to the power of plus sign close square brackets squared over denominator open square brackets H Br O close square brackets end fraction 5 cross times 10 to the power of negative sign 9 end exponent equals fraction numerator open square brackets H to the power of plus sign close square brackets squared over denominator 0 comma 1 end fraction open square brackets H to the power of plus sign close square brackets equals square root of 5 cross times 10 to the power of negative sign 10 end exponent end root open square brackets H to the power of plus sign close square brackets equals 2 comma 24 cross times 10 to the power of negative sign 5 end exponent space M end style

Dengan demikian, maka jawaban yang tepat adalah begin mathsize 14px style 2 comma 24 cross times 10 to the power of negative sign 5 end exponent end style M.

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