45.4 L of dinitrogen reacted with 22.7 L of dioxygen and 45.4 L of nitrous oxide was formed. The reaction is given below:

2N2(g) + O2(g) 2N2O(g)


Which law is being obeyed in this experiment? Write the statement of the law?


Dinitrogen and dioxygen are N2 and O2, which are gases at STP. The reaction proceeds to form N2O. The ratios of the reactant and products are 45.4:22.7:45.4, which is equal to 2:1:2.

The ratio has small whole numbers and is simple. Hence the experiment follows the Gay-Lussac’s law of gaseous volumes, which states that when gases combine or produced in a chemical reaction they do so in a simple ratio by volume, provided all gases are at the same temperature and pressure.


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