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Jika konsentrasi  dalam larutan jenuh , maka hasil kali kelarutan  adalah...

Pertanyaan

Jika konsentrasi Ca to the power of 2 plus sign dalam larutan jenuh Ca F subscript 2 equals 2 cross times 10 to the power of negative sign 4 space end exponent mol forward slash L, maka hasil kali kelarutan Ca F subscript 2 adalahspace...

Pembahasan Soal:

  • Tuliskan reaksi kesetimbangan Ca F subscript 2:

Ca F subscript 2 open parentheses italic s close parentheses equilibrium Ca to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus 2 F to the power of minus sign left parenthesis italic a italic q right parenthesis 
 

  • Masukkan ke rumus hasil kali kelarutan (K subscript sp):

 Ca F subscript 2 open parentheses italic s close parentheses equilibrium Ca to the power of 2 plus sign left parenthesis italic a italic q right parenthesis plus 2 F to the power of minus sign left parenthesis italic a italic q right parenthesis space space space space s 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 2 s 
 

table attributes columnalign right center left columnspacing 0px end attributes row cell K subscript sp space Ca F subscript 2 end cell equals cell open square brackets Ca to the power of 2 plus sign close square brackets open square brackets 2 F to the power of minus sign close square brackets end cell row blank equals cell open parentheses s close parentheses left parenthesis 2 s right parenthesis squared space equals 4 s cubed end cell row blank equals cell 4 cross times left parenthesis 2 cross times 10 to the power of negative sign 4 end exponent right parenthesis cubed space end cell row blank equals cell 4 cross times 8 cross times 10 to the power of negative sign 12 end exponent end cell row blank equals cell 3 comma 2 cross times 10 to the power of negative sign 11 end exponent end cell end table  


Jadi, hasil kali kelarutan Ca F subscript 2 adalah 3 comma 2 cross times 10 to the power of negative sign 11 end exponent.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 18 Mei 2021

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