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nathnal
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PostPosted: Sun Oct 01, 2017 7:20 pm    Post subject: hydrolysis Reply with quoteFind all posts by nathnal

If magnesium ribbon is placed in warm aluminum sulfate solution, bubbles of gas are formed.

What is the gas that is formed?

Write 2 net ionic equations to explain what happens.

The equation I wrote down for the reaction between magnesium and aluminum sulfate is:
3Mg^2+ + Al(SO4)3 ---> 3MgSO4 (aq) + 2Al(OH)3 (s)

I believe this is incorrect. I can't figure out what the gas is. Please help!
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ChenBeier
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Location: Berlin, Germany
PostPosted: Mon Oct 02, 2017 11:17 am    Post subject: Reply with quoteFind all posts by ChenBeier

Aluminiumsulfate has an acidic pH. The gas what will be developed is hydrogen.

Mg + 2 H+ => Mg 2+ + H2

Al 3+ + (3-n) H2O => Al(OH)(3-n)(n)+ + (3-n) H+, n = 0,1,2
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