Topic: What is substance A? (Read 1615 times)

Iron Man · « **on:** October 10, 2013, 11:07:57 AM »

Hello,

I

v e g o t s o m e k \in d o f q u i z h e r e, w h i c h m y t e a c h e r h a s g i v e n \to m e : T h e r e

$ve got some kind of quiz here, which my teacher has given to me: There$ s a substance A:
-with NaOH(aq) there's a precipitate which can be solved in acids
-with BaCl2 there's a white precipitate which cannot be solved in acids
-in with NH3+H2O+H2S there will be some black solid
-with KSCN(aq) there wont be some colorful reaction

Out of reaction 2 I guess the Anion is the Sulfate-anion;
but I don't know what's the Kation.

Can somebody please help me?

Borek · « **Reply #1 on:** October 10, 2013, 12:53:27 PM »

Insoluble hydroxide, black sulfide, and definitely not the iron. See if anything mentioned here helps.

Topic: What is substance A? (Read 1615 times)

Iron Man

What is substance A?

Borek

Re: What is substance A?

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