The reaction represented is a single displacement reaction, where potassium (K) displaces iodine (I2) from potassium iodide (KI) to form potassium iodide and elemental iodine.
The reaction represented by 2K + I2 is a combination or synthesis reaction, where potassium (K) and iodine (I2) combine to form potassium iodide (KI).
The reaction you've provided is a combustion reaction. In this reaction, methane (CH4) reacts with oxygen (O2) to form carbon dioxide (CO2) and water (H2O) as products.
The reaction represents a single replacement reaction where the metal displaces the hydrogen in the acid to form a salt and releases hydrogen gas as a byproduct.
It is a hydration reaction.
This is a single displacement reaction, where zinc (Zn) replaces sodium (Na) in sodium chloride (NaCl) to form zinc chloride (ZnCl2) and sodium (Na) metal. The reaction is also known as a displacement or substitution reaction.
Synthesis
The reaction represented by 2K + I2 is a combination or synthesis reaction, where potassium (K) and iodine (I2) combine to form potassium iodide (KI).
This reaction is a single displacement reaction, also known as a displacement reaction or a replacement reaction. In this type of reaction, one element replaces another in a compound.
The reaction you've provided is a combustion reaction. In this reaction, methane (CH4) reacts with oxygen (O2) to form carbon dioxide (CO2) and water (H2O) as products.
double-replacement
Double Replacement
The reaction represents a single replacement reaction where the metal displaces the hydrogen in the acid to form a salt and releases hydrogen gas as a byproduct.
A combustion reaction
Acid base reaction
This is a chemical reaction known as a single displacement or redox reaction. In this reaction, aluminum (Al) replaces hydrogen (H) in hydrochloric acid (HCl) to form aluminum chloride (AlCl3) and hydrogen gas (H2).
The reaction you provided is a double displacement reaction. In this reaction, calcium carbonate (CaCO3) reacts with sulfuric acid (H2SO4) to produce calcium sulfate (CaSO4), water (H2), and carbon dioxide (CO2).
This chemical equation represents a decomposition reaction, where calcium carbonate (CaHCO3) breaks down into calcium carbonate (CaCO3), water (H2O), and carbon dioxide (CO2) when heat is applied.