Iklan

Pertanyaan

Seorang siswa mempelajari reaksi pengendapan dengan mencampurkan berbagai larutan sebagai berikut. Percobaan Campuran larutan (1) 10 mL CaSO 4 ​ 0,1 M dan 10 mL Na 2 ​ SO 4 ​ 0,1 M (2) 10 mL 0,01 M dan 10 mL 0,01 M (3) 10 mL 0,001 M dan 10 mL 0,001 M (4) 10 mL 0,01 M dan 10 mL NaOH 0,01 M Diketahui hasil kali kelarutan ( K sp ​ ) CaSO 4 ​ = 9 , 1 × 1 0 − 6 dan Ca ( OH ) 2 = 5 , 5 × 1 0 − 6 . Secara teori, percobaan yang menghasilkan endapan adalah percobaan nomor ....

Seorang siswa mempelajari reaksi pengendapan dengan mencampurkan berbagai larutan sebagai berikut.
 

Percobaan Campuran larutan
(1) 10 mL  0,1 M dan 10 mL  0,1 M
(2) 10 mL Ca S O subscript 4 0,01 M dan 10 mL Na subscript 2 S O subscript 4 0,01 M
(3) 10 mL Ca S O subscript 4 0,001 M dan 10 mL Na subscript 2 S O subscript 4 0,001 M
(4) 10 mL Ca S O subscript 4 0,01 M dan 10 mL  0,01 M


Diketahui hasil kali kelarutan  dan . Secara teori, percobaan yang menghasilkan endapan adalah percobaan nomor ....

 

  1. (1)space 

  2. (1) dan (2)  

  3. (3) dan (4)  

  4. (1), (2), dan (3)  

  5. (1), (2), (3), dan (4)space   

Ikuti Tryout SNBT & Menangkan E-Wallet 100rb

Habis dalam

01

:

21

:

26

:

21

Klaim

Iklan

F. Krisna

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah B.

jawaban yang benar adalah B.

Pembahasan

Untuk mengetahui apakah suatu elektrolit masih larut atau sudah mengendap yaitu dengan cara membandingkan harga hasil kali konsentrasi ion yang terdapat dalam larutan dengan harga nya. adalah hasil kali ion-ion masing-masing pangkat koefisien dalam larutan jenuh. Jika maka larutan tersebut larut. Jika maka larutan tersebut tepat jenuh. Jika maka larutan tersebut mengendap. Berdasarkan percobaan di atas nilai untuk masing-masing percobaan adalah sebagai berikut. Percobaan 1 Percobaan 2 Percobaan 3 Percobaan 4 Jadi, jawaban yang benar adalah B.

Untuk mengetahui apakah suatu elektrolit masih larut atau sudah mengendap yaitu dengan cara membandingkan harga hasil kali konsentrasi ion left parenthesis italic Q right parenthesis yang terdapat dalam larutan dengan harga K subscript italic s italic p end subscript nya. K subscript italic s italic p end subscript adalah hasil kali ion-ion masing-masing pangkat koefisien dalam larutan jenuh. 

  • Jika italic Q less than K subscript sp maka larutan tersebut larut.
  • Jika italic Q equals K subscript italic s italic p end subscript maka larutan tersebut tepat jenuh.
  • Jika italic Q greater than K subscript italic s italic p end subscript maka larutan tersebut mengendap.

Berdasarkan percobaan di atas nilai left parenthesis italic Q right parenthesis untuk masing-masing percobaan adalah sebagai berikut.

  • Percobaan 1

table attributes columnalign right center left columnspacing 0px end attributes row cell Ca S O subscript 4 end cell rightwards arrow cell Ca to the power of 2 plus sign plus S O subscript 4 to the power of 2 minus sign end exponent end cell row cell open square brackets Ca to the power of 2 plus sign close square brackets end cell equals cell fraction numerator mol space Ca S O subscript 4 over denominator V space campuran end fraction end cell row blank equals cell fraction numerator 10 space mL cross times 0 comma 1 space M over denominator 20 space mL end fraction end cell row blank equals cell 0 comma 05 space M end cell row cell left square bracket S O subscript 4 to the power of 2 minus sign end exponent right square bracket end cell equals cell fraction numerator mol space Ca S O subscript 4 over denominator V space campuran end fraction plus fraction numerator mol space Na subscript 2 S O subscript 4 over denominator V space campuran end fraction end cell row blank equals cell fraction numerator 10 space mL cross times 0 comma 1 space M over denominator 20 space mL end fraction plus fraction numerator 10 space mL cross times 0 comma 1 space M over denominator 20 space mL end fraction end cell row blank equals cell 0 comma 1 space M end cell row blank blank blank row italic Q equals cell open square brackets Ca to the power of 2 plus sign close square brackets left square bracket S O subscript 4 to the power of 2 minus sign end exponent right square bracket end cell row blank equals cell left parenthesis 0 comma 05 right parenthesis left parenthesis 0 comma 1 right parenthesis end cell row blank equals cell 0 comma 005 end cell row blank blank blank row italic Q greater than cell K italic s italic p space sehingga space mengendap point end cell end table 

  • Percobaan 2

table attributes columnalign right center left columnspacing 0px end attributes row cell Ca S O subscript 4 end cell rightwards arrow cell Ca to the power of 2 plus sign plus S O subscript 4 to the power of 2 minus sign end exponent end cell row cell open square brackets Ca to the power of 2 plus sign close square brackets end cell equals cell fraction numerator mol space Ca S O subscript 4 over denominator V space campuran end fraction end cell row blank equals cell fraction numerator 10 space mL cross times 0 comma 01 space M over denominator 20 space mL end fraction end cell row blank equals cell 0 comma 005 space M end cell row cell left square bracket S O subscript 4 to the power of 2 minus sign end exponent right square bracket end cell equals cell fraction numerator mol space Ca S O subscript 4 over denominator V space campuran end fraction plus fraction numerator mol space Na subscript 2 S O subscript 4 over denominator V space campuran end fraction end cell row blank equals cell fraction numerator 10 space mL cross times 0 comma 01 space M over denominator 20 space mL end fraction plus fraction numerator 10 space mL cross times 0 comma 01 space M over denominator 20 space mL end fraction end cell row blank equals cell 0 comma 01 space M end cell row blank blank blank row italic Q equals cell open square brackets Ca to the power of 2 plus sign close square brackets left square bracket S O subscript 4 to the power of 2 minus sign end exponent right square bracket end cell row blank equals cell left parenthesis 0 comma 005 right parenthesis left parenthesis 0 comma 01 right parenthesis end cell row blank equals cell 5 cross times 10 to the power of negative sign 5 end exponent end cell row blank blank blank row italic Q greater than cell K italic s italic p space sehingga space mengendap point end cell end table 

  • Percobaan 3

table attributes columnalign right center left columnspacing 0px end attributes row cell Ca S O subscript 4 end cell rightwards arrow cell Ca to the power of 2 plus sign plus S O subscript 4 to the power of 2 minus sign end exponent end cell row cell open square brackets Ca to the power of 2 plus sign close square brackets end cell equals cell fraction numerator mol space Ca S O subscript 4 over denominator V space campuran end fraction end cell row blank equals cell fraction numerator 10 space mL cross times 0 comma 001 space M over denominator 20 space mL end fraction end cell row blank equals cell 0 comma 0005 space M end cell row cell left square bracket S O subscript 4 to the power of 2 minus sign end exponent right square bracket end cell equals cell fraction numerator mol space Ca S O subscript 4 over denominator V space campuran end fraction plus fraction numerator mol space Na subscript 2 S O subscript 4 over denominator V space campuran end fraction end cell row blank equals cell fraction numerator 10 space mL cross times 0 comma 001 space M over denominator 20 space mL end fraction plus fraction numerator 10 space mL cross times 0 comma 001 space M over denominator 20 space mL end fraction end cell row blank equals cell 0 comma 001 space M end cell row blank blank blank row italic Q equals cell open square brackets Ca to the power of 2 plus sign close square brackets left square bracket S O subscript 4 to the power of 2 minus sign end exponent right square bracket end cell row blank equals cell left parenthesis 0 comma 0005 right parenthesis left parenthesis 0 comma 001 right parenthesis end cell row blank equals cell 5 cross times 10 to the power of negative sign 8 end exponent end cell row blank blank blank row italic Q italic less than cell K italic s italic p space sehingga space larut forward slash tidak space mengendap point end cell end table 

  • Percobaan 4

table attributes columnalign right center left columnspacing 0px end attributes row cell mol space Ca S O subscript 4 end cell equals cell V cross times M equals 10 space L cross times 0 comma 01 space M equals 0 comma 1 space mmol end cell row cell mol space Ca to the power of 2 plus sign end cell equals cell mol space Ca S O subscript 4 equals 0 comma 1 space mmol end cell row cell mol space S O subscript 4 to the power of 2 minus sign end exponent end cell equals cell mol space Ca S O subscript 4 equals 0 comma 1 space mmol end cell row blank blank blank row cell mol space Na O H end cell equals cell V cross times M equals 10 space L cross times 0 comma 01 space M equals 0 comma 1 space mmol end cell row cell mol space Na to the power of plus sign end cell equals cell mol space Na O H equals 0 comma 1 space mmol end cell row cell mol space O H to the power of minus sign end cell equals cell mol space Na O H equals 0 comma 1 space mmol end cell row blank blank blank row cell V space akhir end cell equals cell V space Ca S O subscript 4 and V space Na O H end cell row blank equals cell 10 space mL plus 10 space mL end cell row blank equals cell 20 space mL end cell row blank blank blank row cell open square brackets Ca to the power of 2 plus sign close square brackets end cell equals cell left square bracket S O 4 to the power of 2 minus sign end exponent right square bracket equals fraction numerator mol over denominator V space campuran end fraction equals fraction numerator 0 comma 1 space mmol over denominator 20 space mL end fraction equals 0 comma 005 space M end cell row cell open square brackets Na to the power of plus sign close square brackets end cell equals cell open square brackets O H to the power of minus sign close square brackets equals fraction numerator mol over denominator V space campuran end fraction equals fraction numerator 0 comma 1 space mmol over denominator 20 space mL end fraction equals 0 comma 005 space M end cell row blank blank blank row cell italic Q space Ca open parentheses O H close parentheses subscript 2 end cell equals cell open square brackets Ca to the power of 2 plus sign close square brackets left square bracket open square brackets O H to the power of minus sign close square brackets squared space equals left parenthesis 0 comma 005 right parenthesis left parenthesis 0 comma 005 right parenthesis squared space equals 1 comma 25 cross times 10 to the power of negative sign 7 end exponent end cell row blank blank blank row italic Q less than cell K subscript italic s italic p end subscript space sehingga space larutan space tidak space mengendap point end cell row blank blank blank end table  

Jadi, jawaban yang benar adalah B.

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

2

Iklan

Pertanyaan serupa

Dalam suatu larutan terdapat CaCl 2 ​ dan BaCl 2 ​ masing-masing 0,01 M. Larutan tersebut ditetesi sedikit demi sedikit dengan larutan Na 2 ​ SO 4 ​ . Anggap volume larutan tidak berubah dengan penamb...

1

5.0

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 02130930000

02130930000

Ikuti Kami

©2026 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia