Dinitrogen pentoxide decomposes in a sealed

CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics

Problem

Dinitrogen pentoxide decomposes in a sealed, rigid container at 298 K298\,\text{K} according to 2 N2O5(g)→4 NO2(g)+O2(g)2\,\text{N}_{2}\text{O}_{5}(\text{g}) \rightarrow 4\,\text{NO}_{2}(\text{g}) + \text{O}_{2}(\text{g}). The laboratory has a pressure sensor, a gas-tight syringe, a visible-light spectrophotometer, and a pH meter. Which of the following measurements would provide the most direct data for determining the rate of the decomposition? (a) Change in the total pressure inside the container as a function of time (b) Change in the partial pressure of O2O_{2} inside the container as a function of time (c) Absorbance of the reaction mixture at 450 nm450\,\text{nm} where NO2\text{NO}_{2} shows weak coloration (d) Volume of gas removed periodically with the syringe and released to the atmosphere

Related theory

Browse the problem library