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Kelarutan ion Al 3+ dalam 250 mL larutan Al(OH) 3 sebanyak 3,9 gram adalah…. (Ar Al = 27, Ar O =16, Ar H = 1)

Kelarutan  ion Al3+ dalam 250 mL larutan Al(OH)3 sebanyak 3,9 gram adalah…. (Ar Al = 27, Ar O = 16, Ar H = 1)

  1. 0,1 M

  2. 0,2 M

  3. 0,3 M

  4. 0,6 M

  5. 0,8 M

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S. Utari

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

Jawaban terverifikasi

Pembahasan

Diketahui: MassaAl(OH) 3 = 3,9 gram V larutan = 250 mL Ditanya: sAl 3+ ...? Dijawab: MrAl(OH) 3 = Ar Al + 3 (Ar O) + 3 (Ar H) = 27 + 3(16) + 3(1) = 78 gram/mol

Diketahui: Massa Al(OH)3 = 3,9 gram 

                 V larutan = 250 mL 

Ditanya: s Al3+ ...?

Dijawab: 

Mr Al(OH)3 = Ar Al + 3 (Ar O) + 3 (Ar H) 

                   = 27 + 3(16) + 3(1) 

                   = 78 gram/mol 

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