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Holly
Lv 4
Holly asked in Science & MathematicsChemistry · 9 years ago

Help with predicting reactions in Chemistry?

We did a lab for analysis cations. In the lab report, we are given two equations that we have to complete, balance, and tell which one "undergoes a reaction". I balanced them, but I don't know how to tell which is the correct reaction. Is it the complex ion that determines it?

Here's an example:

Co(OH)2(s) + NaOH(aq)=

Al(OH)3(s)+Na(OH)(aq)=

If you could help me with this one, I think I could figure the rest out. Thanks.

2 Answers

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  • 9 years ago
    Favourite answer

    Co(OH)2(s) + 2NaOH(aq)= Na2Co(OH)4-------> Na2CoO2

    Al(OH)3(s)+Na(OH)(aq)= NaAl(OH)4-------> NaAlO2

    Second one is right. Not sure about first.

  • 9 years ago

    Not really understanding your question. If you want to know whether the "reaction" occurs or not in lab, just observe for changes in ph, smell, color, solubility, state, etc.

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