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Hitunglah pH dan konsentrasi ion H + , jika : Ka = 0,04 dan larutan 0,01 M

Hitunglah pH dan konsentrasi ion , jika :

Ka = 0,04 dan larutan 0,01 M 

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N. Puspita

Master Teacher

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menentukan konsentrasi ion menentukan pH jadi,

menentukan konsentrasi ion begin mathsize 14px style H to the power of plus sign end style

begin mathsize 14px style open square brackets H to the power of plus sign close square brackets space equals square root of Ka space x space M end root space space space space space space space space space equals space square root of 0 comma 04 space x space 0 comma 01 end root space space space space space space space space space equals space square root of 4 space x space 10 to the power of negative sign 2 end exponent end root space x space 10 to the power of negative sign 2 end exponent space space space space space space space space space equals square root of 4 space x space 10 to the power of negative sign 4 end exponent end root space space space space space space space space space equals 2 space x space 10 to the power of negative sign 2 end exponent space M end style

menentukan pH

begin mathsize 14px style pH space equals space minus sign log space open square brackets H to the power of plus sign close square brackets space space space space space equals space minus sign log space 2 space x space 10 to the power of negative sign 2 end exponent space space space space space equals 2 space minus sign space log space 2 end style

jadi, begin mathsize 14px style open square brackets H to the power of plus sign close square brackets space equals space 2 space x space 10 to the power of negative sign 2 space end exponent dan space pH space equals space 2 space minus sign space log space 2 end style

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