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
To determine the type of chemical reactions for the given equations, we can analyze the reactants and products involved. Here's how:
1. 2Na + 2H2O -> 2NaOH + H2
This is a single displacement reaction. Sodium (Na) displaces hydrogen (H) from water (H2O) to form sodium hydroxide (NaOH) and hydrogen gas (H2).
2. 2FeS2 + 3O2 -> Fe2O2 + 2SO2
This is a synthesis reaction. Iron sulfide (FeS2) and oxygen (O2) combine to form iron (III) oxide (Fe2O3) and sulfur dioxide (SO2).
3. CaCO3 -> CO2 + CaO
This is a decomposition reaction. Calcium carbonate (CaCO3) decomposes into carbon dioxide (CO2) and calcium oxide (CaO).
4. 2H2S + 2KOH -> K2S + 2H2O
This is a double displacement reaction. Hydrogen sulfide (H2S) and potassium hydroxide (KOH) exchange ions to form potassium sulfide (K2S) and water (H2O).
5. 2Ca + 4H2O -> 2Ca(OH)2 + H2
This is a single displacement reaction. Calcium (Ca) displaces hydrogen (H) from water (H2O) to form calcium hydroxide (Ca(OH)2) and hydrogen gas (H2).
Remember, the key to determining the type of chemical reaction is to analyze the reactants and products and determine if there is a rearrangement of atoms or a combination/displacement of elements.