The thermal decomposition of phosphine (PH3) into

Chapter 14, Problem 30QP

(choose chapter or problem)

The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a first-order reaction: The half-life of the reaction is 35.0 s at 680°C. Calculate (a) the first-order rate constant for the reaction and (b) the time required for 95 percent of the phosphine to decompose.

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