(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The kinetics of the decomposition of phosphine at 950 K

4PH3 (g) -> P4 (g) + 6H2 (g)

was studied by injecting PH3(g) into a reaction vessel and measuring the total pressure at constant volume.

P total (Torr) Time (s)

100 0

150 40

167 80

172 120

What is the rate constant of this reaction?

2. Relevant equations

PV = nRT

rate = k[PH3] ^n

3. The attempt at a solution

Do I need to find the reaction order with respect to PH3 before finding the rate constant? I am lost.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: General Chemistry Pressure and Rate laws

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