Pertanyaan

Anilin ( C 6 H 5 NH 2 ) sebagai basa lemah memiliki pH larutan sebesar 9. Konsentrasi larutan anilin sebesar (diketahui ) ….

Anilin ( $C_{6} H_{5} NH_{2}$ ) sebagai basa lemah memiliki pH larutan sebesar 9. Konsentrasi larutan anilin sebesar (diketahui ) ….

0,0135 M
0,135 M

S. Lubis

Master Teacher

Jawaban terverifikasi

Pembahasan

Selanjutnya, dalam menentukan konsentrasi perhitungannya menjadi

begin mathsize 12px style pOH equals 14 minus pH space pOH equals 14 minus 9 equals 5 pOH equals negative log invisible function application open square brackets OH to the power of minus close square brackets open square brackets OH to the power of minus close square brackets equals 10 to the power of negative pOH end exponent equals 10 to the power of negative 5 end exponent end style

Selanjutnya, dalam menentukan konsentrasi perhitungannya menjadi

$begin mathsize 12px style open square brackets OH to the power of minus close square brackets equals square root of straight K subscript straight b cross times straight M end root open square brackets OH to the power of minus close square brackets squared equals straight K subscript straight b cross times straight M straight M equals open square brackets OH to the power of minus close square brackets squared over straight K subscript straight b equals fraction numerator open square brackets 10 to the power of negative 5 end exponent close square brackets squared over denominator 7 , 4 cross times 10 to the power of negative 10 end exponent end fraction straight M equals fraction numerator 10 to the power of negative 10 end exponent over denominator 7 , 4 cross times 10 to the power of negative 10 end exponent end fraction straight M equals fraction numerator 10 cross times 10 to the power of negative 11 end exponent over denominator 7 , 4 cross times 10 to the power of negative 10 end exponent end fraction straight M equals 0 , 135 end style$