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Konsentrasi ion OH− dalam larutan NH4​OH dengan α = 0,01 dan Kb = 10−5 adalah ....​

Pertanyaan

Konsentrasi ion O H to the power of minus sign dalam larutan N H subscript 4 O H dengan alpha = 0,01 dan Kb10 to the power of negative sign 5 end exponent adalah ....blank subscript blank

I. Solichah

Master Teacher

Jawaban terverifikasi

Jawaban

konsentrasi ion open square brackets O H to the power of minus sign close square brackets dalam larutan N H subscript 4 O H adalah bold 10 to the power of bold minus sign bold 3 end exponent.

Pembahasan

N H subscript 4 O H merupakan suatu larutan basa lemah. Untuk menentukan open square brackets O H to the power of minus sign close square brackets dari larutannya dapat mengikuti langkah berikut.

  • Menentukan konsentrasi larutan N H subscript 4 O H 
    table attributes columnalign right center left columnspacing 0px end attributes row alpha equals cell square root of K subscript b over M subscript b end root end cell row cell 0 comma 01 end cell equals cell square root of 10 to the power of negative sign 5 end exponent over M subscript b end root end cell row cell left parenthesis 10 to the power of negative sign 2 end exponent right parenthesis squared end cell equals cell 10 to the power of negative sign 5 end exponent over M subscript b end cell row cell space M subscript b end cell equals cell 10 to the power of negative sign 5 end exponent over 10 to the power of negative sign 4 end exponent end cell row cell M subscript b end cell equals cell 10 to the power of negative sign 1 end exponent end cell end table
     
  • Menentukan open square brackets O H to the power of minus sign close square brackets
    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 alpha middle dot M subscript b end cell row blank equals cell 10 to the power of negative sign 2 end exponent middle dot 10 to the power of negative sign 1 end exponent end cell row blank equals cell 10 to the power of negative sign 3 end exponent end cell end table

Jadi, konsentrasi ion open square brackets O H to the power of minus sign close square brackets dalam larutan N H subscript 4 O H adalah bold 10 to the power of bold minus sign bold 3 end exponent.

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