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Jika  air ditambahkan ke dalam  larutan  0,1 M, pH...

Jika begin mathsize 14px style 90 space cm cubed end style air ditambahkan ke dalam begin mathsize 14px style 10 space cm cubed end style larutan begin mathsize 14px style H Cl end style 0,1 M, pH larutan berubah dari...

  1. 1 menjadi 2space

  2. 1 menjadi 3spacespace

  3. 1 menjadi 5space

  4. 3 menjadi 4space

  5. 1 menjadi 4space

Jawaban:

Jika begin mathsize 14px style 90 space cm cubed end style air ditambahkan ke dalam begin mathsize 14px style 10 space cm cubed end style larutan begin mathsize 14px style H Cl end style 0,1 M, pH larutan berubah dari...

pH larutan awal:


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open square brackets H to the power of plus sign close square brackets end cell equals cell n cross times M end cell row blank equals cell 1 cross times 0 comma 1 space M end cell row blank equals cell 10 to the power of negative sign 1 end exponent space M end cell end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row pH equals cell negative sign log space open square brackets H to the power of plus sign close square brackets end cell row blank equals cell negative sign log space 10 to the power of negative sign 1 end exponent end cell row blank equals 1 end table end style


pH larutan setelah pengenceran:


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell V subscript 1 cross times M subscript 1 end cell equals cell V subscript 2 cross times M subscript 2 end cell row cell 10 space cm cubed cross times 0 comma 1 space M end cell equals cell left parenthesis 10 plus 90 right parenthesis cm cubed cross times M subscript 2 end cell row cell M subscript 2 end cell equals cell begin inline style 1 over 100 end style end cell row blank equals cell 10 to the power of negative sign 2 end exponent space M end cell end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row pH equals cell negative sign log space open square brackets H to the power of plus sign close square brackets end cell row blank equals cell negative sign log space 10 to the power of negative sign 2 end exponent end cell row blank equals 2 end table end style


Jadi, jawaban yang benar adalah A.

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