1.

Consider the graph given in Q.9Which of the following options does not show instantaneous rate of reaction at 40^(th) second?

Answer»

`(V_(5) - V_(2))/(50 -30)`
`(V_(4) - V_(2))/(50 - 30)`
`(V_(3) - V_(2))/(40 - 30)`
`(V_(3) - V_(1))/(40 - 20)`

SOLUTION :Instantaneous rate can be determind graphically by DRAWING a tangent on the curve.
Thus, volume change during 50-30 SEC. interval =
`V_(5) - V_(2)` and not `v_(4) - V_(2)` Hence, `(V_(4) - V_(2))/(50 - 30)` does not show
Instantaneous rate of reaction at `40^(th)` second.


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