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1) The gas phase decomposition of dinitrogen pentoxide at 335 K N2O5(g)  2 NO2(g) + ½ O2(g)...

1) The gas phase decomposition of dinitrogen pentoxide at 335 K

N2O5(g)  2 NO2(g) + ½ O2(g)

is first order in N2O5 with a rate constant of 4.70×10-3 s-1.

If the initial concentration of N2O5 is 0.105 M, the concentration of N2O5 will be  Mafter 391 s have passed.

2) The gas phase decomposition of dinitrogen pentoxide at 335 K

N2O5(g)2 NO2(g) + ½ O2(g)

is first order in N2O5 with a rate constant of 4.70×10-3 s-1.

If the initial concentration of N2O5 is 0.166 M, the concentration of N2O5 will be 1.98×10-2 M after s have passed.

3) The gas phase decomposition of sulfuryl chloride at 600 K

SO2Cl2(g)SO2(g) + Cl2(g)

is first order in SO2Cl2.

During one experiment it was found that when the initial concentration of SO2Cl2 was 5.02×10-3 M, the concentration of SO2Cl2 dropped to 1.20×10-3 M after 359 min had passed.

Based on this experiment, the rate constant for the reaction is min-1.

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