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Suatu basa lemah NH 4 ​ OH mempunyai kosentrasi 0,5 M dan terionisasi sebanyak 10%. Harga pOH dan pH secara berturut-turut adalah...

Suatu basa lemah   mempunyai kosentrasi 0,5 M dan terionisasi sebanyak 10%. Harga pOH dan pH secara berturut-turut adalah...space 

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0,5 M yang terionisasi 10% mempunyai dan .

 begin mathsize 14px style N H subscript 4 O H end style 0,5 M yang terionisasi 10% mempunyai begin mathsize 14px style pOH equals 2 minus sign log space 5 end style dan begin mathsize 14px style pH equals 12 plus log space 5 end style.undefined

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Menentukan nilai Menentukan konsenstrasi ion Menentukan nilai pOH Menentukan nilai pH Jadi, 0,5 M yang terionisasi 10% mempunyai dan .

  • Menentukan nilai begin mathsize 14px style K subscript b end style


  begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row alpha equals cell square root of K subscript b over M subscript N H subscript 4 O H end subscript end root end cell row cell 0 comma 1 end cell equals cell square root of fraction numerator K subscript b over denominator 0 comma 5 space M end fraction end root end cell row cell left parenthesis 0 comma 1 right parenthesis squared end cell equals cell fraction numerator K subscript b over denominator 0 comma 5 space M end fraction space end cell row cell K subscript b end cell equals cell 5 cross times 10 to the power of negative sign 3 end exponent end cell end table end style 

  • Menentukan konsenstrasi ion begin mathsize 14px style O H to the power of minus sign end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell square root of K subscript b cross times M subscript N H subscript 4 O H end subscript end root end cell row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell square root of 5 cross times 10 to the power of negative sign 3 end exponent cross times 0 comma 5 end root end cell row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell square root of 25 cross times 10 to the power of negative sign 4 end exponent end root end cell row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell 5 cross times 10 to the power of negative sign 2 end exponent space M end cell end table end style  

  • Menentukan nilai pOH

table attributes columnalign right center left columnspacing 0px end attributes row size 14px pOH size 14px equals cell size 14px minus sign size 14px log size 14px space begin mathsize 14px style open square brackets O H to the power of minus sign close square brackets end style end cell row size 14px pOH size 14px equals cell size 14px minus sign size 14px log size 14px space begin mathsize 14px style left parenthesis 5 cross times 10 to the power of negative sign 2 end exponent right parenthesis end style end cell row size 14px pOH size 14px equals cell size 14px 2 size 14px minus sign size 14px log size 14px space size 14px 5 end cell end table 

  • Menentukan nilai pH 

table attributes columnalign right center left columnspacing 0px end attributes row size 14px pH size 14px equals cell size 14px 14 size 14px minus sign size 14px pOH end cell row size 14px pH size 14px equals cell size 14px 14 size 14px minus sign begin mathsize 14px style left parenthesis 2 minus sign log space 5 right parenthesis end style end cell row size 14px pH size 14px equals cell size 14px 12 size 14px plus size 14px log size 14px space size 14px 5 end cell end table


Jadi, begin mathsize 14px style N H subscript 4 O H end style 0,5 M yang terionisasi 10% mempunyai begin mathsize 14px style pOH equals 2 minus sign log space 5 end style dan begin mathsize 14px style pH equals 12 plus log space 5 end style.undefined

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