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In presence of excess of water at 25degee celcius Rxn follows 1st order kinetics. pt after 10 mins and after very long time are 188 and 388 torr find rate constant of rxn if vapour pressure of water at 25 degree Celsius is 28 torrrA_______2B+C |
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Answer» By putting values in equation k= t2.303 log (P 0 −x)P 0 = t2.303 log (P ∞ /3−(P t −P 0 ))P ∞ /3 We will get answer as k=1.2hr −1 (A,B,C) let the initial pressure of A be P s MM of HG and the pressure of A decreases in 10 MINUTE be x unit.InitiallyAt time 10 minAt∞time A(g)P 0 P 0 −x0 ⟶ 2B(g)02x2P 0 + C(g)0xP 0 After long time INTERVAL, P ∞ =2P 0 +P 0 =3P 0 After t time P t =P 0 +2xFor a first order reaction, the rate constant expression would bek= t2.303 log P 0 −xP 0 |
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