What is the order of reaction for decomposition of gaseous acetaldehyde?

What is the order of reaction for decomposition of gaseous acetaldehyde?
  1. 1
  2. 2
  3. $1.5$
  4. 0

Solution

Decomposition of gaseous acetaldehyde, $\mathrm{CH}_{3} \mathrm{CHO}_{(\mathrm{g})} \longrightarrow \mathrm{CH}_{4(\mathrm{~g})}+\mathrm{CO}_{(\mathrm{g})}$ $\therefore$ Rate $=\mathrm{k}\left[\mathrm{CH}_{3} \mathrm{CHO}\right]^{3 / 2}$ The order of the reaction is $1.5$

Asked in: MHT CET 2020 (15 Oct Shift 2)

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