Roboguru

0,2 M ( ) memiliki pH...

begin mathsize 14px style N H subscript 3 end style 0,2 M (begin mathsize 14px style Kb equals 2 cross times 10 to the power of negative sign 5 end exponent end style ) memiliki pH...undefined 

Jawaban:

Larutan begin mathsize 14px style N H subscript 3 end style adalah basa lemah dan dapat dicari pH larutan tersebut dengan menggunakan cara sebagai berikut:


begin mathsize 14px style open square brackets O H to the power of minus sign close square brackets equals square root of Kb cross times M end root open square brackets O H to the power of minus sign close square brackets equals square root of 2 cross times 10 to the power of negative sign 5 end exponent cross times 0 comma 2 end root open square brackets O H to the power of minus sign close square brackets equals square root of 4 cross times 10 to the power of negative sign 6 end exponent end root open square brackets O H to the power of minus sign close square brackets equals 2 cross times 10 to the power of negative sign 3 end exponent  pOH equals minus sign log open square brackets O H to the power of minus sign close square brackets pOH equals minus sign log space 2 cross times 10 to the power of negative sign 3 end exponent pOH equals 3 minus sign log space 2  pH equals 14 minus sign pOH pH equals 14 minus sign left parenthesis 3 minus sign log space 2 right parenthesis pH equals 11 plus log space 2 end style 
 

Jadi, larutan tersebut memiliki pH 11+log 2.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