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Pertanyaan

Dalam suatu larutan terdapat ion Ag + , Ca 2 + , Ba 2 + , Sr 2 + , dan Pb 2 + dengan konsentrasi yang sama. Jika larutan tersebut ditetesi dengan larutan K 2 ​ SO 4 ​ , zat yang mula-mula mengendapadalah ....

Dalam suatu larutan terdapat ion , , , , dan  dengan konsentrasi yang sama. Jika larutan tersebut ditetesi dengan larutan , zat yang mula-mula mengendap adalah ....

  1. begin mathsize 14px style Ag subscript 2 S O subscript 4 space left parenthesis K subscript sp equals 1 comma 4 cross times 10 to the power of negative sign 5 end exponent right parenthesis end style 

  2. begin mathsize 14px style Sr S O subscript 4 space left parenthesis K subscript sp equals 2 comma 5 cross times 10 to the power of negative sign 7 end exponent right parenthesis end style 

  3. begin mathsize 14px style Pb S O subscript 4 space left parenthesis K subscript sp equals 1 comma 7 cross times 10 to the power of negative sign 8 end exponent right parenthesis end style 

  4. begin mathsize 14px style Ba S O subscript 4 space left parenthesis K subscript sp equals 1 comma 1 cross times 10 to the power of negative sign 10 end exponent right parenthesis end style 

  5. begin mathsize 14px style Ca S O subscript 4 space left parenthesis K subscript sp equals 9 cross times 10 to the power of negative sign 6 end exponent right parenthesis end style 

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S. Lubis

Master Teacher

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah D.

jawaban yang benar adalah D.

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Pembahasan

Pembahasan

Konstanta hasil kali kelarutan atau Ksp adalah hasil kali konsentrasi ion-ion tersebut dipangkatkan koefisien reaksi. Tidak semua garam bersifat larut dalam air, apabila garam yang sukar larut itu dikocok dalam air maka garam itu sebagian akan larut dalam air dan bagian yang larut ini akan terurai menjadi ion - ionnya. Suatu larutan dikatakan jenuh, tepat jenuh atau mengendap dapat dilakukan dengan membandingkan Qsp dan Ksp. Jadi, jawaban yang benar adalah D.

Konstanta hasil kali kelarutan atau Ksp adalah hasil kali konsentrasi ion-ion tersebut dipangkatkan koefisien reaksi. Tidak semua garam bersifat larut dalam air, apabila garam yang sukar larut itu dikocok dalam air maka garam itu sebagian akan larut dalam air dan bagian yang larut ini akan terurai menjadi ion - ionnya. Suatu larutan dikatakan jenuh, tepat jenuh atau mengendap dapat dilakukan dengan membandingkan Qsp dan Ksp.

size 14px Qsp size 14px space size 14px less than size 14px space size 14px Ksp size 14px comma size 14px space size 14px tidak size 14px space size 14px terjadi size 14px space size 14px pengendapan size 14px Qsp size 14px space size 14px equals size 14px space size 14px Ksp size 14px comma size 14px space size 14px tepat size 14px space size 14px jenuh size 14px Qsp size 14px space size 14px greater than size 14px space size 14px Ksp size 14px comma size 14px space size 14px terjadi size 14px space size 14px endapan
 

begin mathsize 14px style italic a bold right parenthesis bold space bold Ksp bold space Ag subscript bold 2 S O subscript bold 4 bold space bold equals bold space bold 1 bold space italic x bold space bold 10 to the power of bold minus sign bold 5 end exponent Ag subscript 2 S O subscript 4 open parentheses italic s close parentheses equilibrium 2 Ag to the power of plus sign left parenthesis italic a italic q right parenthesis plus S O subscript 4 to the power of 2 minus sign space end exponent left parenthesis italic a italic q right parenthesis s space space space space space space space space space space space space space space space space space space space space space 2 s space space space space space space space space space space space space space space space space space space s K subscript italic s italic p end subscript italic space Ag subscript 2 S O subscript 4 equals space italic Q subscript italic s italic p end subscript Ag subscript italic 2 S O subscript italic 4 K subscript italic s italic p end subscript Ag subscript 2 S O subscript 4 equals space open square brackets Ag to the power of plus sign close square brackets squared left square bracket S O subscript 4 to the power of 2 minus sign space end exponent right square bracket K subscript italic s italic p end subscript space Ag subscript 2 S O subscript 4 equals left parenthesis 2 s right parenthesis squared open parentheses s close parentheses 1 space x space 10 to the power of negative sign 5 end exponent space space space space equals 4 s cubed space space space space space space space space space space space space space space space space space space s space equals 0 comma 0135 space mol forward slash L  italic b bold right parenthesis bold space bold Ksp bold space Sr S O subscript bold 4 bold space bold equals bold space bold 2 bold comma bold 5 bold space italic x bold space bold 10 to the power of bold minus sign bold 7 end exponent Sr S O subscript 4 bold space left parenthesis italic s right parenthesis equilibrium Sr to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus S O subscript 4 to the power of 2 minus sign end exponent left parenthesis italic a italic q right parenthesis s space space space space space space space space space space space space space space space space space space s space space space space space space space space space space space space space space space space space space s K subscript italic s italic p end subscript space Sr S O subscript 4 equals space italic Q subscript italic s italic p end subscript italic space Sr S O subscript 4 K subscript italic s italic p end subscript space Sr S O subscript 4 equals space open square brackets Sr 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 K subscript italic s italic p end subscript space Sr S O subscript 4 equals s squared 2 comma 5 space x space 10 to the power of negative sign 7 end exponent space equals s squared space space space space space space space space space space space space space s space equals space 5 x 10 to the power of negative sign 4 end exponent space mol forward slash L  italic c bold right parenthesis bold space bold Ksp bold space Pb S O subscript bold 4 bold space bold equals bold space bold 1 bold comma bold 7 bold space italic x bold space bold 10 to the power of bold minus sign bold 8 end exponent bold space Pb S O subscript 4 open parentheses italic s close parentheses equilibrium Pb to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus S O subscript 4 to the power of 2 minus sign end exponent left parenthesis italic a italic q right parenthesis s space space space space space space space space space space space space space space space space space space s space space space space space space space space space space space space space space space space space space s K subscript italic s italic p end subscript space space Pb S O subscript 4 equals space italic Q subscript italic s italic p end subscript italic space space Pb S O subscript 4 K subscript italic s italic p end subscript space Pb S O subscript 4 equals space open square brackets Pb 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 K subscript italic s italic p end subscript space space Pb S O subscript 4 equals s squared 1 comma 7 space x space 10 to the power of negative sign 8 end exponent space equals s squared bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space italic s bold space bold equals bold space bold 1 bold comma bold 3 italic x bold 10 to the power of bold minus sign bold 4 end exponent bold space bold mol bold forward slash italic L  italic d bold right parenthesis bold space bold Ksp bold space Ba S O subscript bold 4 bold space bold equals bold space bold 1 bold comma bold 1 bold space italic x bold space bold 10 to the power of bold minus sign bold 10 end exponent space Ba S O subscript 4 open parentheses italic s close parentheses equilibrium Ba to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus S O subscript 4 to the power of 2 minus sign end exponent left parenthesis italic a italic q right parenthesis s space space space space space space space space space space space space space space space space space space s space space space space space space space space space space space space space space space space space space s K subscript italic s italic p end subscript space space Ba S O subscript 4 equals space italic Q subscript italic s italic p end subscript italic space space Ba S O subscript 4 K subscript italic s italic p end subscript space Ba S O subscript 4 equals space open square brackets Ba 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 K subscript italic s italic p end subscript space space Ba S O subscript 4 equals s squared 1 comma 1 space x space 10 to the power of negative sign 10 end exponent space equals s squared space space space space space space space space space space space space space italic s bold space bold equals bold space bold 1 bold comma bold 0 italic x bold 10 to the power of bold minus sign bold 5 end exponent bold space bold mol bold forward slash italic L  italic e bold right parenthesis bold space bold Ksp bold space Ca S O subscript bold 4 bold space bold equals bold space bold 9 bold space italic x bold space bold 10 to the power of bold minus sign bold 6 end exponent space Ca S O subscript 4 open parentheses italic s close parentheses equilibrium Ca to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus S O subscript 4 to the power of 2 minus sign end exponent left parenthesis italic a italic q right parenthesis s space space space space space space space space space space space space space space space space space space s space space space space space space space space space space space space space space space space space space s K subscript italic s italic p end subscript space space Ca S O subscript 4 equals space italic Q subscript italic s italic p end subscript italic space space Ca S O subscript 4 K subscript italic s italic p end subscript space Ca S O subscript 4 equals space 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 K subscript italic s italic p end subscript space space Ca S O subscript 4 equals s squared 9 space x space 10 to the power of negative sign 6 end exponent space equals s squared bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space bold space italic s bold space bold equals bold space bold 3 bold comma bold 0 italic x bold 10 to the power of bold minus sign bold 3 end exponent bold space bold mol bold forward slash italic L  bold Semakin bold space bold kecil bold comma bold space bold kelarutannya bold space bold maka bold space bold akan bold space bold semakin bold space bold mudah bold space bold pengendap    space end style

Jadi, jawaban yang benar adalah D.

Konsep Kilat

Kelarutan

Hasil Kali Kelarutan (Kₛₚ)

Faktor-Faktor Kelarutan dan Pengendapan

Latihan Bab

326

Bella Nurjannah

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