In a study of the gas phase decomposition of phosphine at 120 °C PH3(g) 1/4 P,(g) + 3/2 H2(g) the concentration of PH, was followed as a function of time. It was found that a graph of In[PH3] versus time in seconds gave a straight line with a slope of -2.41x10-2 s1 and a y-intercept of -2.82 order in PH3 and the half life for the reaction is Based on this plot, the reaction is seconds.

The following data are for the gas phase decomposition of sulfuryl chloride at 600 K.SO2Cl2(g) SO2(g) + Cl2(g) [ SO2Cl2 ], M 3.73×10-3 1.87×10-3 9.35×10-4 4.68×10-4   time, min 0 203 406 609 Hint: It is not necessary to graph these data. (1) The half life observed for this reaction is ________ min .(2) Based on these data, the rate constant for this _______(zero, first, or second) order reaction is __________min-1.

The Arrhenius parameters for the gas-phase decomposit ion of cyclobutane, C4H8(g)→ 2 C2H4(g). are log(A/s-1) = 15.6 and Ea = 261 kJ mol- 1. What is the ha lf- life of cyclobutane at (a) 20 °C, (b) 500 °C?

For the gas phase decomposition of dinitrogen pentoxide at 335 K2 N2O54 NO2 + O2the following data have been obtained: [N2O5], M 0.191 8.92×10-2 4.17×10-2 1.95×10-2   time, s 0 162 324 486 The average rate of disappearance of N2O5 over the time period from t = 324 s to t = 486 s is M s-1.

4. For the reaction: N,0,(g) = 2NO,(g) Assuming initial mass m of N,0,(g) and constant temperature (T) and Derive the relation between: (1) (i) The ratio of initial volume V, and average molar mass at equilib initial molar mass M, final volume V, (ii) Tho don 0000i

The following data are for the gas phase decomposition of sulfuryl chloride at 600 K. sO,C2(g)- - SO2(g) + Cl2(g) [ SO;Clz ], M 2.89x103 1.45x103 7.25x104 3.63x104 time, min 168 336 504 Hint: It is not necessary to graph these data. (1) The half life observed for this reaction is | min. (2) Based on these data, the rate constant for this order reaction is min

In a study of the decomposition of ammonia on a tungsten surface at 1100 °CNH31/2 N2 + 3/2 H2the following data were obtained: [NH3], M 1.51×10-3 7.55×10-4 3.78×10-4 1.89×10-4 seconds 0 441 661 771 Hint: It is not necessary to graph these data.(1)The observed half life for this reaction when the starting concentration is 1.51×10-3 M is _______s and when the starting concentration is 7.55×10-4 M is _________s.(2)The average rate of disappearance of NH3 from t = 0 s to t = 441 s is __________  M s-1.(3)The average rate of disappearance of NH3 from t = 441 s to t = 661 s is ________ M s-1.(4)Based on these data, the rate constant for this ______  order reaction is _________ M s-1.