The decomposition of sulfuryl chlordie(SO 2 Cl 2 ) is a first order process. The

Question

The decomposition of sulfuryl chlordie(SO2Cl2) is a first order process. Therate constat for the decomposition of 660 K is 4.5 x10-2 s-1.
A) If we begn with an intial SO2Cl2 pressureof 375 torr, what is the pressure of this substance after 65s? B) What time will pressure of SO2Cl2decline to one-tenth its initial value? The decomposition of sulfuryl chlordie(SO2Cl2) is a first order process. Therate constat for the decomposition of 660 K is 4.5 x10-2 s-1.
A) If we begn with an intial SO2Cl2 pressureof 375 torr, what is the pressure of this substance after 65s? B) What time will pressure of SO2Cl2decline to one-tenth its initial value?

Explanation / Answer

Integrated 1st order equation: ln(p) = ln(po) - kt, (a) ln(p) = ln(375 torr) - (0.045 /s) (65 s); Solving, p = 20.12 torr. (b) ln(37.5 torr) = ln(375 torr) - (0.045 /s) t; Solving, t = 51.2 s.

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