Chemical Kinetics — Chemistry STD 12 Science — Question
Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryChemical Kinetics2 Marks
Question
Give examples of first order reaction.
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Answer
$\rightarrow$ Hydrogenation of ethene is an example of first order reaction.
$ \ce{C_2H_4(g) + H_2(g) \rightarrow C_2H_6(g)}$
$\text { Rate }= k \left[ C _2 H _4\right]$
All natural and artificial radioactive decay of unstable nuclei take place by first order kinetics. ${ }_{88}^{226} Ra \rightarrow{ }_2^4 He \ +\ { }_{86}^{222} Rn$
$\text { Rate }= k [ Ra ]$
Decomposition of $\ce{N_2O_5}$ and $\ce{N_2O}$ are some more examples of first order reactions.
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