A student investigates the gas-phase decomposition of nitrogen dioxide:
2NO2(g)→2NO(g)+O2(g) 2\text{NO}_2(\text{g}) \rightarrow 2\text{NO}(\text{g}) + \text{O}_2(\text{g}) 2NO2(g)→2NO(g)+O2(g)This reaction is second-order with respect to nitrogen dioxide, with the rate equation:
Rate=k[NO2]2 \text{Rate} = k[\text{NO}_2]^2 Rate=k[NO2]2Which graph correctly shows how the initial rate of reaction varies with the concentration of nitrogen dioxide, [NO2][\text{NO}_2][NO2]?
Graph A
Graph B
Graph C
Graph D