The first-order reaction, SO_2Cl_2 rightarrow So_2 Cl_2, has a half-life of 875

Question

The first-order reaction, SO_2Cl_2 rightarrow So_2 Cl_2, has a half-life of 875 hours at 593 K How long will it take for the concentration of SO_2Cl_2 to fall to 12.5% of its initial value? 26.2 hr 6.06 hr 0.165 hr 6.06 hr 3.22 hr A plot of 1/[BrO^-]vs time for the reaction 3 BrO^-(aq) rightarrow BrO_3(aq) + 2 Br(q) What is the order of the reaction with respect to the hypobromite ion, BrO? Hydrogen iodide decomposes at 800 K via a second-order process to produce hydrogen and iodine according to the following chemical equation. At 800 K it takes 142 seconds tor the initial concentration of HI to decrease from 675 times 10^-2 M to 3.50 times 10^-2 M. What is the rate constant lord the reaction at this temperature? 10.3 M-1 S-1 5.12 times 10^-4 M^-1S^-1 9.69 times 10^-2 M^-1S^-1 What is the minimum energy barrier that must be overcome for a chemical reaction to occur? activation energy rate limiting energy net energy potential energy What factor affects the rate of a chemical reaction? orientation of molecules fraction of collations with sufficient energy collision frequency All of these the reaction lord the decomposition of dinitrogen monoxide gas to from oxygen radicals is: N_2(g) middot O(g). If the rate constant is 3 04 middot 10^-2 s^-1 and the frequency factor is what is the activation energy (or tax- first-order reaction at 700 degree C? 180 kj/mole 250 kj/mole 0.262 kJ/mole 38.2 kj/mole the decomposition of ozone in the stratosphere can occur by the following two-step mechanism Which species is an intermediate in this mechanism? BrO O_3 Br O A mechanism for a naturally occurring reaction that destroys ozone is:

Explanation / Answer

8. A ( 3times half life)

9. second order

10. D, 9.69 x 10^-2

11. activation energy

12. all the above

13. 250 kJ/mol

14. BrO

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