Asecond order reaction is 50% complete in 15 min. how long after the start of the 10 reaction will it be 85% complete?

85 minutes

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Half life for second order kinetics is given by:

= half life = 15 min

k = rate constant =?

= initial concentration = 100 (say)

Integrated rate law for second order kinetics is given by:

a= concentration left after time t =

Thus after 85 minutes after the start of the reaction, it will be 85% complete.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :