2. At 563 K, gas (A) decomposes according to the reaction 2Аgas=2Втв 3Dgas. During the reaction, P changes
t, min 0 330 390 480
Р*10-5, Pa 0.9777 1.0742 1.0907 1.1132

Prove that the reaction is of the first order and calculate the rate constant ( V= const)

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