20% deocmposition of `H_(2)O_(2)` in presence of an acid requires 5 min. The time required for 50% decomposition in minutes is

Electrolysis of 50% H_(2)SO_(4) gives

A reaction proceeds by first order, 75% of this reactin was completed in 32 min. The time required for 50% completion is

If a first order reaction takes 32 minutes for 75% completion, then time required for 50% completion is :

50% of a radio active substance decays in 5 hours. The time required for the 87.5% decays is

In the case of a first order reaction, the ratio of time required for 99.9% completion to 50% completion is

50% of the amount of a radioactive substance decomposes in 5 years. The time required for the decomposition of 99.9% of the substance will be

A First order reaction is 50% complete in 69.3 minutes. Time required for 90% completion for the same reaction is

75 % of first order reaction is complete in 30 minutes. What is the time required for 93.75 % of the reaction (in minutes) ?

The decomposition of N_(2)O_(5) at an initial pressure of 380 mm and 50^(@)C is 50% complete in 56 minutes and 71% complete in 100 minutes. What is the order of reaction? How much of N_(2)O_(5) will decomposes in 100 minutes at 50^(@)C but at an initial pressure of 500 mm ?