8.Which of the following salts is insoluble in water?
(A) Na2S
(B) K2CO3
(C) Pb(NO3)2
(D) All of these are soluble in water.

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統計: A(0), B(0), C(2), D(1), E(0) #3328482

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題目解析 這道題目考查的是鹽類的水溶性...
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