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Pertanyaan

Tentukan konsentrasi undefined atau begin mathsize 14px style O H to the power of minus sign end style berikut ini:

begin mathsize 14px style Al open parentheses O H close parentheses subscript 3 end style 0,02 M 

J. Siregar

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

Jawaban terverifikasi

Jawaban

konsentrasi begin mathsize 14px style O H to the power of minus sign end style dari begin mathsize 14px style Al open parentheses O H close parentheses subscript 3 end style adalah begin mathsize 14px style 2 comma 3 cross times 10 to the power of negative sign 4 end exponent end style.

Pembahasan

begin mathsize 14px style Al open parentheses O H close parentheses subscript 3 end style merupakan basa lemah sehingga yang akan kita hitung adalah konsentrasi begin mathsize 14px style O H to the power of minus sign end style.

begin mathsize 14px style open square brackets O H to the power of minus sign close square brackets equals square root of K subscript b cross times M end root open square brackets O H to the power of minus sign close square brackets equals square root of 2 comma 5 cross times 10 to the power of negative sign 6 end exponent cross times 0 comma 02 end root open square brackets O H to the power of minus sign close square brackets equals square root of 5 cross times 10 to the power of negative sign 8 end exponent end root open square brackets O H to the power of minus sign close square brackets equals 2 comma 3 cross times 10 to the power of negative sign 4 end exponent end style 


Jadi, konsentrasi begin mathsize 14px style O H to the power of minus sign end style dari begin mathsize 14px style Al open parentheses O H close parentheses subscript 3 end style adalah begin mathsize 14px style 2 comma 3 cross times 10 to the power of negative sign 4 end exponent end style.

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