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Senyawa sulit larut berikut yang paling sulit larut adalah ….

Senyawa sulit larut berikut yang paling sulit larut adalah ….

  1. begin mathsize 14px style Cd open parentheses OH close parentheses subscript 2 blank open parentheses K subscript s p end subscript equals 5 , 9 cross times 10 to the power of negative 15 end exponent close parentheses end style 

  2. begin mathsize 14px style CdCO subscript 3 blank open parentheses K subscript s p end subscript equals 5 , 2 cross times 10 to the power of negative 12 end exponent close parentheses end style 

  3. begin mathsize 14px style ZnCO subscript 3 blank open parentheses K subscript s p end subscript equals 2 , 0 cross times 10 to the power of negative 10 end exponent close parentheses end style 

  4. begin mathsize 14px style CaF subscript 2 blank open parentheses K subscript s p end subscript equals 4 , 0 cross times 10 to the power of negative 11 end exponent close parentheses end style 

  5. begin mathsize 14px style AgI blank open parentheses K subscript s p end subscript equals 8 , 3 cross times 10 to the power of negative 17 end exponent close parentheses end style 

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S. Lubis

Master Teacher

Mahasiswa/Alumni Universitas Sumatera Utara

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, dan memiliki persamaan reaksi seperti berikut. Oleh karena itu, persamaan matematis , dan mengikuti persamaan berikut. Pada setiap kelarutan molar s nilai akan sama dengan sehingga nilai s bernilai . dan memiliki persamaan reaksi seperti berikut . Oleh karena itu, persamaan matematis dan mengikuti persamaan berikut. Pada setiap kelarutan molar s , anion dan terlarut2 s . Nilai akan sama dengan sehingga nilai s bernilai . Berdasarkan perhitungan, senyawa paling sulit larut adalah AgI yang memiliki kelarutan terkecil sebesar (opsi E).

begin mathsize 14px style K subscript s p end subscript blank CdCO subscript 3 end stylebegin mathsize 14px style K subscript s p end subscript blank AgI end style dan begin mathsize 14px style K subscript s p end subscript blank ZnCO subscript 3 end style memiliki persamaan reaksi seperti berikut.

begin mathsize 14px style space space space CdCO subscript 3 open parentheses s close parentheses rightwards harpoon over leftwards harpoon Cd to the power of 2 plus end exponent open parentheses a q close parentheses plus CO subscript 3 to the power of 2 minus end exponent open parentheses a q close parentheses AgI open parentheses straight s close parentheses rightwards harpoon over leftwards harpoon Ag to the power of plus open parentheses aq close parentheses plus straight I to the power of minus open parentheses aq close parentheses space space space ZnCO subscript 3 open parentheses straight s close parentheses rightwards harpoon over leftwards harpoon Zn to the power of 2 plus end exponent open parentheses aq close parentheses plus CO subscript 3 to the power of 2 minus end exponent open parentheses aq close parentheses end style 

Oleh karena itu, persamaan matematis undefinedundefined dan undefined mengikuti persamaan berikut.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell K subscript s p end subscript blank CdCO subscript 3 end cell equals cell open square brackets Cd to the power of 2 plus end exponent close square brackets open square brackets CO subscript 3 to the power of 2 minus end exponent close square brackets end cell row cell K subscript s p end subscript blank AgI end cell equals cell open square brackets Ag to the power of plus close square brackets open square brackets straight I to the power of minus close square brackets end cell row cell K subscript s p end subscript blank ZnCO subscript 3 end cell equals cell open square brackets Zn to the power of 2 plus end exponent close square brackets open square brackets CO subscript 3 to the power of 2 minus end exponent close square brackets end cell end table end style 

Pada setiap kelarutan molar s nilai begin mathsize 14px style K subscript s p end subscript end style akan sama dengan begin mathsize 14px style s squared end style sehingga nilai s bernilai begin mathsize 14px style square root of K subscript s p end subscript end root end style.

begin mathsize 14px style s blank CdCO subscript 3 equals square root of K subscript s p end subscript blank CdCO subscript 3 end root equals square root of 5 , 2 cross times 10 to the power of negative 12 end exponent end root equals 2 , 28 cross times 10 to the power of negative 5 end exponent space space space space space space space space space space space space s blank AgI equals square root of K subscript s p end subscript blank AgI end root equals square root of 8 , 3 cross times 10 to the power of negative 17 end exponent end root equals 9 , 11 cross times 10 to the power of negative 9 end exponent space space s blank ZnCO subscript 3 equals square root of K subscript s p end subscript blank ZnCO subscript 3 end root equals square root of 2 , 0 cross times 10 to the power of negative 10 end exponent end root equals 1 , 41 cross times 10 to the power of negative 5 end exponent end style  

undefined dan begin mathsize 14px style K subscript s p end subscript blank CaF subscript 2 end style memiliki persamaan reaksi seperti berikut.

begin mathsize 14px style Cd open parentheses OH close parentheses subscript 2 open parentheses s close parentheses rightwards harpoon over leftwards harpoon Cd to the power of 2 plus end exponent open parentheses a q close parentheses plus 2 OH to the power of minus open parentheses a q close parentheses space space space CaF subscript 2 stretchy left parenthesis straight s stretchy right parenthesis rightwards harpoon over leftwards harpoon Ca to the power of 2 plus end exponent left parenthesis aq right parenthesis plus 2 straight F to the power of minus left parenthesis aq stretchy right parenthesis end style 

Oleh karena itu, persamaan matematis undefined dan undefined mengikuti persamaan berikut.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell K subscript s p end subscript blank Cd open parentheses OH close parentheses subscript 2 end cell equals cell open square brackets Cd to the power of 2 plus end exponent close square brackets open square brackets OH to the power of minus close square brackets squared end cell row cell K subscript s p end subscript blank CaF subscript 2 end cell equals cell open square brackets Ca to the power of 2 plus end exponent close square brackets open square brackets straight F to the power of minus close square brackets squared end cell end table end style 

Pada setiap kelarutan molar s, anion undefined dan begin mathsize 14px style straight F to the power of minus end style terlarut 2s. Nilai undefined akan sama dengan begin mathsize 14px style 4 s cubed end style sehingga nilai s bernilai begin mathsize 14px style cube root of K subscript s p end subscript over 4 end root end style.

begin mathsize 14px style s blank Cd open parentheses OH close parentheses subscript 2 equals cube root of fraction numerator K subscript s p end subscript Cd open parentheses OH close parentheses subscript 2 over denominator 4 end fraction end root s blank Cd open parentheses OH close parentheses subscript 2 equals cube root of fraction numerator 5 , 9 cross times 10 to the power of negative 15 end exponent over denominator 4 end fraction end root equals 1 , 21 cross times 10 to the power of negative 5 end exponent s blank CaF subscript 2 equals cube root of fraction numerator K subscript s p end subscript CaF subscript 2 over denominator 4 end fraction end root s blank CaF subscript 2 equals cube root of fraction numerator 4 , 0 cross times 10 to the power of negative 11 end exponent over denominator 4 end fraction end root equals 2 , 15 cross times 10 to the power of negative 4 end exponent end style

Berdasarkan perhitungan, senyawa paling sulit larut adalah AgI yang memiliki kelarutan terkecil sebesar begin mathsize 14px style 9 , 11 cross times 10 to the power of negative 9 end exponent blank straight M end style (opsi E).

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