For a first order reaction, show that time required for 99% completion is twice the time required for the completion of 90% of reaction.

Show that for a first order reaction the time required for 75% completion is twice the time required for the completion of 50% of reaction.

Show that time required for completion 3/4 th of a first order reaction is twice the time required for completion of 1/2 of the reaction.

A and B can complete a piece of work in 9/5 hours,when they work together.If they work individually then A needs 1fr1/2 hours more than that required by B to complete the same.Find the time required by A and B for the completion of the work working individually.

Show that in a 1st reaction, time required for completion of 99.9% is 10 times of half life time of the reaction.

A first order reaction take 40 minutes for 30% decomposition. Estimate the half life of the sample.

A first order reaction takes 40 minutes for 20% decomposition. Calculate its half life period.

A first order reaction takes 40minutes for 20% decomposition. Calculate its half life period,

The time required for 10% completion of a first order reaction at 298 K is equal to that required for its 25% completion at 308 K. If the value of A is 4xx10^10 s^-1 . Calculate k at 318 K and E_a .

Give one exampe of first order reaction.

A reaction is 50% complete in 2 hours and 75% complete in 4 hours. What is the order of the reaction?