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Diketahui . Jika Mr  = 248, hitunglah massa  yang ...

Diketahui begin mathsize 14px style K subscript sp space Ag subscript 2 S space equals 1 comma 6 cross times 10 to the power of negative sign 14 end exponent end style. Jika Mr begin mathsize 14px style Ag subscript 2 S end style = 248, hitunglah massa begin mathsize 14px style Ag subscript 2 S end style yang dapat larut dalam 500 mL air!

Jawaban:

begin mathsize 14px style Ag subscript 2 S open parentheses s close parentheses equilibrium 2 Ag to the power of plus sign open parentheses aq close parentheses and S to the power of 2 minus sign open parentheses aq close parentheses s 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 s K subscript sp equals open square brackets Ag to the power of plus sign close square brackets squared open square brackets S to the power of 2 minus sign close square brackets K subscript sp equals open parentheses 2 s close parentheses squared open parentheses s close parentheses K subscript sp equals 4 s cubed 1 comma 6 cross times 10 to the power of negative sign 14 end exponent equals 4 s cubed s equals 1 comma 59 cross times 10 to the power of negative sign 5 end exponent space M open square brackets Ag subscript 2 S close square brackets equals fraction numerator m over denominator Mr cross times V end fraction 1 comma 59 cross times 10 to the power of negative sign 5 end exponent space equals fraction numerator m over denominator 248 cross times 0 comma 5 end fraction m equals 1 comma 97 space mg end style

Dengan demikian, maka jawaban yang tepat adalah 1,97 mg.

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