The decomposition of sulfuryl chloride (SO2Cl2) is a first-order process. The ra

Question

The decomposition of sulfuryl chloride (SO2Cl2) is a first-order process. The rate constant for the decomposition at 660 K is 4.5 10-2 s-1.

(a) If we begin with an initial SO2Cl2 pressure of 360. torr, what is the pressure of this substance after 61 s?
_____________ torr
(b) At what time will the pressure of SO2Cl2 decline to one eighth its initial value?
_______________s

By what factor will the pressure of sulfuryl chloride decrease after 5 half lives? Note: The answer wants this value: (360. torr)/value = final pressure after decay
_________________ value

Explanation / Answer

a)(a) ln(p) = ln(360 torr) - (0.045 /s) (61 s);
Solving, p = 23.129 torr.

(b) ln(360/8) = ln(360 torr) - (0.045 /s) t;
Solving, t =46.21 s.

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