The decomposition reaction: 3A(g) → 2B(g) + 2C(s) follows first-order kinetics. Starting with pure 'A' (at 6 atm), the pressures of system after 20 min and after a very long time are 5.05 atm and 4.05

Question

The decomposition reaction: 3A(g) → 2B(g) + 2C(s) follows first-order kinetics. Starting with pure 'A' (at 6 atm), the pressures of system after 20 min and after a very long time are 5.05 atm and 4.05 atm, respectively. Identify the correct statement(s) related with the reaction.

Prashant Kotian · Accepted Answer

Correct answer: A,D. 3A(g) → 2B(g) + 2C(s). P_∞ = 4 atm (when all A decomposes). At t = 20 min, P_t = 5.05 atm. Using first-order kinetics, P_t at 40 min = 4.55 atm. Thus (a) and (d) are correct.

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