# The reaction between aluminium powder and anhydrous barium nitrate

Asked by maham237 @ in Chemistry viewed by 780 People

In some ﬁreworks there is a reaction between powdered aluminium and powdered barium nitrate in which heat is evolved and an unreactive gas is produced.
What is the equation for this reaction?

A. 2Al + Ba(NO3)2 -> Al2O3 + BaO + 2NO
B. 4Al + 4Ba(NO3)2 -> 2Al2O3 + 4 Ba(NO2)2 + O2
C. 10Al + 3 Ba(NO3)2 -> 5Al2O3 + 3BaO + 3N2
D. 10Al + 18Ba(NO3)2 -> 10Al(NO3)3 +18BaO +3N2

I think the correct answer from the choices listed above is option A. The correct equation would be:

2Al + 3Ba(NO3)2 -> Al2O3 + 3BaO + 6NO2

The products would be aluminum nitrate, barium oxide and nitrogen dioxide.

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