Balance each of the following unbalanced equations and identify the type of reac

Question

Balance each of the following unbalanced equations and identify the type of reaction: a) Si3N4(s)-->Si(s)+N2(g); b) Mg(s)+N2(g)-->Mg3N2(s); c) Al(s)+H2SO4(aq)-->Al2(SO4)3(aq)+H2(g); d) Mg(s)+H3PO4(aq)-->Mg3(PO4)2(s)+H2(g); e) Cr2O3(s)+H2(g)-->Cr(s)+H2O(g); f) Al(s)+Cl2(g)-->AlCl3(s); g)MgCl2(aq)+AgNO3(aq)-->Mg(NO3)2(aq)+AgCl(s).

Explanation / Answer

a) 2Si3N4(s)-->6Si(s)+4N2(g); b) 3Mg(s)+N2(g)-->Mg3N2(s); c)2Al(s)+3H2SO4(aq)-->Al2(SO4)3(aq)+3H2(g); d) 3Mg(s)+2H3PO4(aq)-->Mg3(PO4)2(s)+3H2(g); e) Cr2O3(s)+H2(g)-->Cr(s)+H2O(g); f) 2Al(s)+3Cl2(g)-->2AlCl3(s); g)MgCl2(aq)+2AgNO3(aq)-->Mg(NO3)2(aq)+2AgCl(s).

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