Roboguru

Tentukan pH dan buat grafik titrasinya jika 50 mL ...

Tentukan pH dan buat grafik titrasinya jika 50 mL begin mathsize 14px style C H subscript 3 C O O H end style 0,1 M dititrasi dengan begin mathsize 14px style Ba open parentheses O H close parentheses subscript 2 end style 0,1 M pada saat:

  1. 0 mL undefined
  2. 10 mL undefined
  3. 20 mL undefined
  4. 25 mL undefined
  5. 30 mL undefined

Jawaban:

begin mathsize 14px style Ka equals 10 to the power of negative sign 5 end exponent end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mmol space C H subscript 3 C O O H end cell equals cell M cross times V end cell row blank equals cell 0 comma 1 space M cross times 50 space mL end cell row blank equals cell 5 space mmol end cell end table end style


1. pH pada saat 0 mL undefined atau pH awal sebelum titrasi


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 square root of Ka cross times M end root end cell row blank equals cell square root of 10 to the power of negative sign 5 end exponent cross times 10 to the power of negative sign 1 end exponent end root end cell row blank equals cell square root of 10 to the power of negative sign 6 end exponent end root end cell row blank equals cell 10 to the power of negative sign 3 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 3 end exponent end cell row blank equals 3 end table end style


2. pH pada saat 10 mL undefined ditambahkan:


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mmol space Ba open parentheses O H close parentheses subscript 2 end cell equals cell M cross times V end cell row blank equals cell 0 comma 1 space M cross times 10 space mL end cell row blank equals cell 1 space mmol end cell end table end style


Persamaan reaksinya:




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 Ka cross times begin inline style a over g end style end cell row blank equals cell 10 to the power of negative sign 5 end exponent cross times begin inline style 3 over 2 end style end cell row blank equals cell 1 comma 5 cross times 10 to the power of negative sign 5 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 1 comma 5 cross times 10 to the power of negative sign 5 end exponent end cell row blank equals cell 5 minus sign log space 1 comma 5 end cell end table end style


3. pH pada 20 mL undefined


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mmol space Ba open parentheses O H close parentheses subscript 2 end cell equals cell M cross times V end cell row blank equals cell 0 comma 1 space M cross times 20 space mL end cell row blank equals cell 2 space mmol end cell end table end style


Persamaan reaksinya adalah:




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 Ka cross times begin inline style a over g end style end cell row blank equals cell 10 to the power of negative sign 5 end exponent cross times begin inline style 1 fourth end style end cell row blank equals cell 2 comma 5 cross times 10 to the power of negative sign 6 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 2 comma 5 cross times 10 to the power of negative sign 6 end exponent end cell row blank equals cell 6 minus sign log space 2 comma 5 end cell end table end style


4. pH pada 25 mL undefined


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mmol space Ba open parentheses O H close parentheses subscript 2 end cell equals cell M cross times V end cell row blank equals cell 0 comma 1 space M cross times 25 space mL end cell row blank equals cell 2 comma 5 space mmol end cell end table end style


Persamaan reaksinya:




begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open square brackets C H subscript 3 C O O to the power of minus sign close square brackets end cell equals cell begin inline style fraction numerator mmol over denominator V open parentheses total close parentheses end fraction end style end cell row blank equals cell begin inline style fraction numerator 5 space mmol over denominator 75 space mL end fraction end style end cell row blank equals cell 6 comma 7 cross times 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 cell open square brackets O H to the power of minus sign close square brackets end cell equals cell square root of begin inline style Kw over Ka end style cross times open square brackets G close square brackets end root end cell row blank equals cell square root of begin inline style 10 to the power of negative sign 14 end exponent over 10 to the power of negative sign 5 end exponent cross times 6 comma 7 cross times 10 to the power of negative sign 2 end exponent end style end root end cell row blank equals cell square root of 67 cross times 10 to the power of negative sign 12 end exponent end root end cell row blank equals cell 8 comma 2 cross times 10 to the power of negative sign 6 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 pOH equals cell negative sign log space open square brackets O H to the power of minus sign close square brackets end cell row blank equals cell negative sign log space 8 comma 2 cross times 10 to the power of negative sign 6 end exponent end cell row blank equals cell 6 minus sign log space 8 comma 2 end cell end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row pH equals cell 14 minus sign pOH end cell row blank equals cell 14 minus sign left parenthesis 6 minus sign log space 8 comma 2 right parenthesis end cell row blank equals cell 8 plus log space 8 comma 2 end cell end table end style


5. pH pada 30 mL undefined


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mmol space Ba open parentheses O H close parentheses subscript 2 end cell equals cell M cross times V end cell row blank equals cell 0 comma 1 space M cross times 30 space mL end cell row blank equals cell 3 space mmol end cell end table end style


Persamaan reaksinya:



begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell left square bracket Ba open parentheses O H close parentheses subscript 2 right square bracket end cell equals cell begin inline style fraction numerator mmol space sisa over denominator V space total end fraction end style end cell row blank equals cell begin inline style fraction numerator 0 comma 5 space mmol over denominator 80 space mL end fraction end style end cell row blank equals cell 6 comma 25 cross times 10 to the power of negative sign 3 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 cell open square brackets O H to the power of minus sign close square brackets end cell equals cell n cross times M end cell row blank equals cell 2 cross times 6 comma 25 cross times 10 to the power of negative sign 3 end exponent end cell row blank equals cell 12 comma 5 cross times 10 to the power of negative sign 3 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 pOH equals cell negative sign log space open square brackets O H to the power of minus sign close square brackets end cell row blank equals cell negative sign log space 12 comma 5 cross times 10 to the power of negative sign 3 end exponent end cell row blank equals cell 3 minus sign log space 12 comma 5 end cell end table end style


begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row pH equals cell 14 minus sign pOH end cell row blank equals cell 14 minus sign left parenthesis 3 minus sign log space 12 comma 5 right parenthesis end cell row blank equals cell 11 plus log space 2 comma 5 end cell end table end style


Grafik titrasi begin mathsize 14px style C H subscript 3 C O O H end style dan undefined:


0

Ruangguru

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ikuti Kami

©2021 Ruangguru. All Rights Reserved