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Tentukan besarnya harga  apabila diketahui besarny...

Tentukan besarnya harga K subscript sp space Fe open parentheses O H close parentheses subscript 3 apabila diketahui besarnya kelarutan Fe open parentheses O H close parentheses subscript 3, dalam air murni adalah 0.05 M!

  1. ...space 

  2. ...space 

Jawaban:

Reaksi kelarutan Fe open parentheses O H close parentheses subscript 3 dalam air:

Fe open parentheses O H close parentheses subscript 3 equilibrium Fe to the power of 3 plus sign and 3 O H to the power of minus sign 0 comma 05 space M space space space space 0 comma 05 space M space space 0 comma 15 space M 

Menghitung harga K subscript sp space Fe open parentheses O H close parentheses subscript 3:

K subscript sp space Fe open parentheses O H close parentheses subscript 3 equals open square brackets Fe to the power of 3 plus sign close square brackets open square brackets O H to the power of minus sign close square brackets cubed space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals left parenthesis 0 comma 05 right parenthesis left parenthesis 0 comma 15 right parenthesis cubed space space space space space space space space space space space space space space space space space space space space equals left parenthesis 0 comma 05 right parenthesis left parenthesis 0 comma 003375 right parenthesis space space space space space space space space space space space space space space space space space space space equals 0 comma 00016875 space space space space space space space space space space space space space space space space space space space equals 1 comma 6875 cross times 10 to the power of negative sign 4 end exponent 

Jadi, harga K subscript sp space Fe open parentheses O H close parentheses subscript 3 adalah 1 comma 6875 cross times 10 to the power of negative sign 4 end exponent.

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