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[Pergunta Diária] Base Teórica 2020.08.03

2020-08-03View Original

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Esta postagem foi editada pela última vez por Qingseinianhua em 3/8/2020 às 08:19.: A concentração da solução saturada do eletrólito pouco solúvel CaF2 é 2,0×10-4mol.dm-3, e seu produto de solubilidade é (). A. 8,0×10-8 B 4,0×10-8 C. 3,2×10-11 D. 8,0×10-12 Resposta: Dicas C: Aqueles que conseguirem explicar o processo de resolução de problemas receberão recompensas adicionais, e as respostas podem ser vistas nas respostas.
Reply #22020-08-03
C (Ca2+)=2,0×10-4mol/L, C(F-)=4,0×10-4mol/L, KSP= C(Ca2+){C(F-)}2=2,0×10-4×(4,0×10-4)2=3,2×10-11.
Reply #32020-08-03
C.3,2×10-11
Reply #42020-08-03
C. 2x10(-4)x4X10(-4)X4x10(-4)=3,2x10(-11)
Reply #52020-08-12
C.3,2×10-11

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