Question

When either a mixture of NO and Br₂ or pure nitrosyl bromide (NOBr) is placed in a reaction vessel, the product mixture contains NO, Br₂, and NOBr. Explain.

Short answer

You need to explain when either a mixture of NO and Br₂ or pure nitrosyl bromide (NOBr) is placed in a reaction vessel, the product mixture contains NO, Br₂, and NOBr.

Step-by-step solution

Solution of the problem

The reaction of formation of NOBr is a dynamic. Initially NO and Br₂ reacts with each other and forms NOBr. The concentrations remain constant and the reaction reaches to equilibrium.

Explanation of the solution

NO and Br₂ reacts with each other and forms NOBr. Hence you can write the reaction like

$2\mathrm{NO}\left(\mathrm{g}\right)+{\mathrm{Br}}_2\left(\mathrm{g}\right)\to 2\mathrm{NOBr}\left(\mathrm{g}\right)$

Initially NO and Br₂ reacts with each other and forms NOBr. When there are enough concentrations of NOBr then it starts to decompose into NO and Br₂. When the rate of forward and backward reactions becomes same then the reaction reaches at its equilibrium.

Conclusion

The reaction of formation of NOBr is a dynamic. Initially NO and Br₂ reacts with each other and forms NOBr. The concentrations remain constant and the reaction reaches to equilibrium.