Author Question: One of the natural processes that destroys ozone in the atmosphere is postulated to consist of two ... (Read 20 times)

faduma · **on:** Jul 8, 2021

Question 1

On the average, air contains about 9.3 mL of argon per liter. What would be the partial pressure of argon in air when the barometric pressure is 780 Torr?
◦ 84 Torr
◦ 7.3 Torr
◦ 780 Torr
◦ 770 Torr
◦ 790 Torr

Question 2

One of the natural processes that destroys ozone in the atmosphere is postulated to consist of two steps:

O₃(g) + UV radiation → O₂(g) + O(g)
O₃(g) + O(g) → 2 O₂(g)

The standard enthalpies of formation for ozone and for atomic oxygen are +142.7 kJ/mol and +249.2 kJ/mol, respectively. What would be the standard energy change associated with the combination of ozone and atomic oxygen to form 50.0 L of molecular oxygen, measured at -75 °C and 0.12 atm?
◦ -38 kJ
◦ -72 kJ
◦ -150 kJ
◦ -196 kJ
◦ -600 kJ

pikon · **Reply #1 on:** Jul 8, 2021

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