NEET Sample Paper NEET Sample Test Paper-51

Using the data given below the order and rate constant for the reaction: \[C{{H}_{3}}CHO\left( g \right)\to C{{H}_{4}}\left( g \right)+Co\left( g \right)\] would be-

Experiment no. Initial cone. Initial rate

\[\left[ mol/\ell \right]\] \[\left[ mol.li{{t}^{-1}}\,{{\sec }^{1}} \right]\]

I 0.10 0.020

II 0.20 0.080

III 0.30 0.180

IV 0.40 0.320

Answer is-

A) \[2,\,\,[k=2.0\,\ell /mol\,\,sec]\]

B) \[0,\,\,[k=2.0\,mol/\ell \,sec]\]

C) \[\,2,\,\,[k=1.5/\ell mol\,\,sec]\]

D) \[\,1,\,\,[k=1.5\,se{{c}^{-1}}]\]

Correct Answer: A

Solution :

\[r=K\,{{[C{{H}_{3}}CHO]}^{m}}\] \[\frac{1}{4}=\,\,{{\left( \frac{1}{2} \right)}^{m}}\,\,\,\,\,\,m\,\,=\,\,2\]