At 27oC it was observed during a reaction of hydrogenation that the pressure of hydrogen gas decreases from 2 atmosphere to 1.1 atmosphere in 75 minutes. Calculate the rate of reaction (in M sec−1) and rate of reaction in terms of pressure.
Open in App
Solution
Rate of reaction=changeinpressuretimetaken
=2−1.175×60atm/sec
=2×10−4atm/sec
so convert to mol/sec
Pv=nRT
nV=PRT
(nv)/sec= molarity per second=PRT/sec
since pressure/second is rate.
(nv)/sec=2×10−40.0821×300=8.12×10−6mol/sec
Thus, the rate of the reaction is 8.12×10−6mol/sec