Question

what are the type of chemical reactions for the below (synthesis, double/single displacement or decomposition)

2Na+2H2O->2NaOH+H2

2FeS2+3O2->Fe2O2+2SO2

CaCO3->CO2+CaO

2H2S+2KOH->K2S+2HOH

2Ca+4HOH->2Ca(OH)2+H2

Answer 1

Don't you need to know these? What do you not understand?