Write an equation for the reaction between nitrogen (ii) oxide and iron (ii) sulphide​

Let us write down the reaction equations for inorganic substances:

N2 + 3H2 = 2NH3 – redox reaction (ORR), ammonia was obtained;

4NH3 + 5O2 = 4NO + 6H2O – ОВР, nitrogen oxide was formed (2);

2NO + O2 = 2NO2 – ОВР, nitrogen oxide was released (4);

H2O + 2NO2 = HNO3 + HNO2 – OBP, nitric acid obtained;

2HNO3 + PbO = Pb (NO3) 2 + H2O – ion exchange, lead nitrate was formed;

2Pb (NO3) 2 = 2PbO + 4NO2 + O2 – OBP, oxygen was obtained.

The reaction products are of practical importance, for example, lead nitrate is the basis for obtaining pigments necessary for dyeing fabrics in the textile industry. These reactions show the connection of non-metals, hydrides, oxides, acids, salts.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.