Roboguru

Sebanyak 8,96 L gas  (STP) dialirkan ke dalam 1 L ...

Sebanyak 8,96 L gas begin mathsize 14px style N H subscript 3 end style (STP) dialirkan ke dalam 1 L larutan begin mathsize 14px style N H subscript 4 Cl end style 0,2 M. Jika begin mathsize 14px style K subscript b space N H subscript 4 O H equals 2 cross times 10 to the power of negative sign 5 end exponent end style, pH setelah semua gas bercampur dengan begin mathsize 14px style N H subscript 4 Cl end style adalah ....

Jawaban:

begin mathsize 14px style n subscript N H subscript 3 end subscript equals fraction numerator 8 comma 96 space L over denominator 22 comma 4 space L forward slash mol end fraction equals 0 comma 4 space mol open square brackets N H subscript 3 close square brackets equals fraction numerator 0 comma 4 space mol over denominator 1 space L end fraction equals 0 comma 4 space M  open square brackets O H to the power of minus sign close square brackets equals K subscript b cross times fraction numerator open square brackets N H subscript 3 close square brackets over denominator open square brackets N H subscript 4 to the power of plus close square brackets end fraction 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 5 end exponent fraction numerator 0 comma 4 over denominator 0 comma 2 end fraction open square brackets O H to the power of minus sign close square brackets equals 4 cross times 10 to the power of negative sign 5 end exponent pOH equals minus sign log open square brackets O H to the power of minus sign close square brackets pOH equals 5 minus sign log space 4  pH equals 14 minus sign left parenthesis 5 minus sign log space 4 right parenthesis pH equals 9 plus log space 4 end style

Dengan demikian, maka jawaban yang tepat adalah 9 + log 4.

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