Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent:
2Ca (s) + O2 (g) -> 2CaO (s)
redox reaction?
reducing agent:
oxidizing agent:
HCl (aq) + NH3 (aq) -> NH4Cl (aq)
redox reaction?
reducing agent:
oxidizing agent:
2N2 (g) + 5O2 (g) -> 2N2O5 (g)
redox reaction?
reducing agent:
oxidizing agent: