Answer
a. 12 molecules of hydrogen that enter in chemical reaction 12 molecules of water are created.
b. After the chemical reaction, the container has 12 molecules of water and 2 molecules of oxygen.
Work Step by Step
a. The container is filled with oxygen and hydrogen gases. There are 12 molecules hydrogen and 8 molecule oxygen in the container.
The balanced equation of the chemical reaction that happens when they are ignited:
2$H_{2}$(g) + $O_{2}$(g)$\longrightarrow$ 2 $H_{2}O$(g)
The ratio is 2:1 , that means 2 molecules f Hydrogen react with 1 molecule of oxygen. Based on the ratio 6 molecules of oxygen are needed to react with 12 molecules of hydrogen . This means that 2 molecules ( 8-6) of oxygen are left non-reacted, as there are no more molecules of hydrogen.
For 2 molecules of hydrogen that enter in chemical reaction, 2 molecules water are formed. Therefore for 12 molecules of hydrogen that enter in chemical reaction 12 molecules of water are created.
b. Based on the explanation provided above, 12 molecules of water are created after we ignite the container that ha 12 molecules hydrogen and 8 molecules oxygen. Therefore after the chemical reaction, the container has 12 molecules of water and 2 molecules of oxygen. Hydrogen is the limiting reactant.
