Iklan

Iklan

Pertanyaan

Besarnya [ H + ] dalam 20 mL larutan yang mengandung 3,35 gram natrium oksalat ( Na 2 ​ C 2 ​ O 4 ​ ) adalah ... ( K a ​ H 2 ​ C 2 ​ O 4 ​ = 5 × 1 0 − 2 )

Besarnya  dalam 20 mL larutan yang mengandung 3,35 gram natrium oksalat  adalah ...  

Iklan

A. Acfreelance

Master Teacher

Jawaban terverifikasi

Jawaban

besar adalah .

besar begin mathsize 14px style bold open square brackets H to the power of bold plus sign bold close square brackets end style adalah begin mathsize 14px style bold 2 bold cross times bold 10 to the power of bold minus sign bold 8 end exponent bold space italic M end style.space  

Iklan

Pembahasan

Molaritas Molaritas oksalat Jadi, besar adalah .

Molaritas begin mathsize 14px style Na subscript bold 2 C subscript bold 2 O subscript bold 4 end style 


begin mathsize 14px style M equals m over italic M subscript r cross times fraction numerator 1000 over denominator V space open parentheses mL close parentheses end fraction M equals fraction numerator 3 comma 35 over denominator 134 end fraction cross times 1000 over 20 M equals 1 comma 25 space M end style 


Molaritas oksalat


begin mathsize 14px style stack Na subscript 2 C subscript 2 O subscript 4 with 1 comma 25 space M below space rightwards arrow space 2 Na to the power of plus sign space plus space stack C subscript 2 O subscript 4 to the power of 2 minus sign with 1 comma 25 space M below end style 

 

begin mathsize 14px style open square brackets O H to the power of minus sign close square brackets equals square root of K subscript w over K subscript a. space open square brackets C subscript 2 O subscript 4 to the power of 2 minus sign close square brackets end root open square brackets O H to the power of minus sign close square brackets equals square root of fraction numerator 10 to the power of negative sign 14 end exponent over denominator 5 cross times 10 to the power of negative sign 2 end exponent end fraction. space 1 comma 25 end root open square brackets O H to the power of minus sign close square brackets equals square root of 25 cross times 10 to the power of negative sign 14 end exponent end root open square brackets O H to the power of minus sign close square brackets equals 5 cross times 10 to the power of negative sign 7 end exponent  K subscript w double bond open square brackets H to the power of plus sign close square brackets open square brackets O H to the power of minus sign close square brackets 10 to the power of negative sign 14 end exponent equals open square brackets H to the power of plus sign close square brackets space 5 cross times 10 to the power of negative sign 7 end exponent open square brackets H to the power of plus sign close square brackets equals 2 cross times 10 to the power of negative sign 8 end exponent space M end style 


Jadi, besar begin mathsize 14px style bold open square brackets H to the power of bold plus sign bold close square brackets end style adalah begin mathsize 14px style bold 2 bold cross times bold 10 to the power of bold minus sign bold 8 end exponent bold space italic M end style.space  

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

3

Iklan

Iklan

Pertanyaan serupa

Garam kalium karbonat ( K 2 ​ CO 3 ​ ) jika dilarutkan ke dalam air akan mengalami hidrolsis sebagian dengan pH tertentu. pH yang terbentuk sesuai dengan konsentrasi larutan Hitunglah massa kalium kar...

9

0.0

Jawaban terverifikasi

RUANGGURU HQ

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

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia