The decomposition of dinitrogen pentoxide, n2o5, to no2 and o2 is a first-order reaction. at 60°c, the rate constant is 2.8 × 10-3min-1. if a rigid vessel initially contains only n2o5 at a pressure of 125 kpa, how long will it take for the total pressure to reach 176 kpa? options (pick 1)a)113 minb)129 minc)42 mind)182 mine)62 minf)83 min

The correct option is a.

Explanation:

125 kPa

125kpa - 2x                            4x    x

Total pressure after reaction = 176 kPa

125 kPa - 2x + 4x + x = 176 kPa

x = 17

125 kpa - 2x = 125 kPa - 2(17) = 91 kPa

Initial pressure of the dinitrogen pentoxide ,(at t=0) =

Final pressure of the dinitrogen pentoxide, (at t = t) = P = 91 kPa

The rate constant is =

It will take 113 minutes for the total pressure to reach 176 kPa.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.