1.

Consider a first order gas phase decomposition reaction given below : A(g)toB(g)+C(g) The initial pressure of the system before decomposition of A was P_(i). After lapse of time 't', total pressure of the system increased by x units and became 'P_(t)'. The rate constant k for the reaction is given as ..................... .

Answer»

`k=(2.303)/(t)LOG""(P_(i))/(P_(i)-x)`
`k=(2.303)/(t)log""(P_(i))/(2P_(i)-P_(t))`
`k=(2.303)/(t)log""(P_(i))/(2P_(i)+P_(t))`
`k=(2.303)/(t)log""(P_(i))/(P_(i)+x)`

ANSWER :B


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