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Larutan L ( OH ) 2 ​ mempunyai pH = 10, Hasil kali kelarutan dari adalah….

Larutan  mempunyai pH = 10, Hasil kali kelarutan dari begin mathsize 14px style L open parentheses O H close parentheses subscript 2 end style adalah….

  1. begin mathsize 14px style 10 to the power of negative sign 10 end exponent end style  

  2. begin mathsize 14px style 5 cross times 10 to the power of negative sign 13 end exponent end style  

  3. begin mathsize 14px style 10 to the power of negative sign 11 end exponent end style  

  4. begin mathsize 14px style 5 cross times 10 to the power of negative sign 16 end exponent end style  

  5. undefined   

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Q. 'Ainillana

Master Teacher

Mahasiswa/Alumni Universitas Negeri Yogyakarta

Jawaban terverifikasi

Jawaban

jawabana yang benar adalah B.

jawabana yang benar adalah B.

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Pembahasan

pH = 10, maka pOH = 4 Maka konsentrasi ion sesuai dengan perbandingan koefisien reaksinya dengan ion . Jadi, jawabana yang benar adalah B.

pH = 10, maka pOH = 4

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row pOH equals cell negative sign log space open square brackets O H to the power of minus sign close square brackets end cell row 4 equals cell negative sign log open square brackets O H to the power of minus sign close square brackets end cell row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell 10 to the power of negative sign 4 end exponent end cell end table end style 

begin mathsize 14px style L open parentheses O H close parentheses subscript 2 equilibrium L to the power of 2 plus sign and 2 O H to the power of minus sign space space space space space space space space space space space space space space space space space space space space space space space space space 10 to the power of negative sign 4 end exponent end style 

Maka konsentrasi ion begin mathsize 14px style L to the power of 2 plus sign end style sesuai dengan perbandingan koefisien reaksinya dengan ion begin mathsize 14px style O H to the power of minus sign end style.

begin mathsize 14px style L open parentheses O H close parentheses subscript 2 equilibrium L to the power of 2 plus sign and 2 O H to the power of minus sign space space space space space space space space space 0 comma 5 cross times 10 to the power of negative sign 4 end exponent space space 10 to the power of negative sign 4 end exponent end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell K subscript sp end cell equals cell open square brackets L to the power of plus sign close square brackets left square bracket 2 O H to the power of minus sign right square bracket squared end cell row blank equals cell left parenthesis 5 cross times 10 to the power of negative sign 5 end exponent right parenthesis left parenthesis 10 to the power of negative sign 4 end exponent right parenthesis squared space end cell row blank equals cell 5 cross times 10 to the power of negative sign 13 end exponent end cell end table end style   

Jadi, jawabana yang benar adalah B.

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