Classify each of these reactions with respect to the followi…

Classify each of these reactions with respect to the following categories: combination reaction, decomposition reaction, combustion reaction, and single-displacement reaction.   Fe2(CO3)2 –> Fe2O3 + 2CO2          [ann1]   2C6H11OH + 17O2 –> 12CO2 + 12H2O      [ann2]   P4O10 + 6H2O –> H3PO4      [ann3]   2C + MnO2 –> Mn + 2CO         [ann4]