PHOTOLYSIS OF AMMONIA IN
June, 1959
of product formation, represent the maximum rate of oxygen consumption. The intercepts, given in Table 111, seem to be proportional to the square root of oxygen pressure. The rates also are prok"P) within portional to the function k f P / ( l the experimental uncertainties. The chief uncertainty in determination of the initial rates is the magnitude of the correction for the gaseous reaction products. There was definite experimental indication of a lag in the build-up of the product pressure, possibly due to a slowness of diffusion of water vapor out of the film. The conclusion reached is that competitive reac-
+
TABLE 111 Max. rate of con-
02 pressure, om.
sumption relative values
1.7 4.0 6.2
0.020 .030 .0386
