The rate of decomposition of PH3 was studied at 891.00 °C. The rate constant was found to be 0.0675  s–1. 4PH3--->P4+6H2 If the reaction is begun with an initial PH3 concentration of 0.95 M, what will be the concentration of PH3 after 12.50  s?

Chemistry: The Molecular Science
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Chapter11: Chemical Kinetics: Rates Of Reactions
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The rate of decomposition of PH3 was studied at 891.00 °C. The rate constant was found to be 0.0675  s–1.

4PH3--->P4+6H2

If the reaction is begun with an initial PH3 concentration of 0.95 M, what will be the concentration of PH3 after 12.50  s?

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