Problem: The rate of decomposition of PH3 was studied at 851.00°C. The rate constant was found to be 0.0585 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 28.50 s?

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The rate of decomposition of PH3 was studied at 851.00°C. The rate constant was found to be 0.0585 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 28.50 s?

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Based on our data, we think this problem is relevant for Professor Daly's class at UD.