At 25°C, the Second-Order Reaction NOCl(g) $\rarr$ NO(g)+ ¹/₂Cl₂(g) is 50% Complete After 5

Multiple Choice

At 25°C, the second-order reaction NOCl(g) $\rarr$ NO(g) + ¹/₂Cl₂(g) is 50% complete after 5.82 hours when the initial concentration of NOCl is 4.46 mol/L.How long will it take for the reaction to be 75% complete?

A) 8.22 hr
B) 11.6 hr
C) 15.5 hr
D) 17.5 hr
E) 23.0 hr