JEE Main 202131 AugustMorning Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 31 August
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Chemical Kinetics
JEE Main 2021 · 31 August · Morning Shift · Chemistry · Chemical Kinetics
For a first order reaction, the ratio of the time for 75 %...
For a first order reaction, the ratio of the time for completion of a reaction to the time for completion is ___________ . (Integer answer)
Correct answer
0
Step-by-step solution
T = \dfrac{2 . 303}{k}\log \left(\dfrac{100}{100 - x %}\right)
{T}_{75 %} = \dfrac{2 . 303}{k}\log \left(\dfrac{100}{25}\right)
{T}_{50 %} = \dfrac{2 . 303}{k}\log \left(\dfrac{100}{50}\right)
\dfrac{{T}_{75 %}}{{T}_{50 %}} = \dfrac{\log 4}{\log 2} = 2
{T}_{75 %} = \dfrac{2 . 303}{k}\log \left(\dfrac{100}{25}\right)
{T}_{50 %} = \dfrac{2 . 303}{k}\log \left(\dfrac{100}{50}\right)
\dfrac{{T}_{75 %}}{{T}_{50 %}} = \dfrac{\log 4}{\log 2} = 2