47. Solving a chemistry problem
31. At 583K AsH3 (gas) decomposes to form As (solid) and H2 (gas). During a reaction at constant volume and temperature, the total pressure in the system changes as follows:
t, hour 0 5.6 6.5 8.0
P, Pa*10-3 97.75 107.41 109.05 111.35
Show that the AsH3 decomposition reaction is a 1st order reaction, calculate the rate constant of this reaction and the half-life.
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