1. Tardigrade
  2. Question
  3. Chemistry
  4. The gaseous decomposition reaction, A ( g ) longrightarrow 2 B ( g )+ C ( g ) is observed to first order over the excess of liquid water at 25° C. It is found that after 10 minutes the total pressure of system is 188 torr and after very long time it is 388 torr. The rate constant of the reaction (in hr -1 ) is: [Given: vapour pressure of H 2 O at 25° is 28 torr ( ln 2=0.7, ln 3=1.1, ln 10=2.3) ]

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Q. The gaseous decomposition reaction, $A ( g ) \longrightarrow 2 B ( g )+ C ( g )$ is observed to first order over the excess of liquid water at $25^{\circ} C$. It is found that after $10$ minutes the total pressure of system is $188$ torr and after very long time it is $388$ torr. The rate constant of the reaction (in $hr ^{-1}$ ) is: [Given : vapour pressure of $H _{2} O$ at $25^{\circ}$ is $28$ torr $(\ln 2=0.7, \ln 3=1.1, \ln 10=2.3)$ ]

Chemical Kinetics

Solution:

Correct answer is '1.20'