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The gaseous decomposition reaction, A(...

The gaseous decomposition reaction,
A(g) `rarr` 2B(g) + C(g)
is observed to be first order over the excess of liquid water at `25^(@)C`. If is found that after 10 minutes the total pressure of system is 188 torr. The rate costant 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)`]

A

`0.02`

B

`1.2`

C

`0.2`

D

none of these

Text Solution

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The correct Answer is:
B
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