Question

Select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere. select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere. o2 cfcl3 n2 he co2

Answer 1

Answer:

cfcl3

Explanation:

When the cfcl3 in the atmosphere is hit by UV rays from the sun, it decomposes to Cl atoms. These Cl atoms then react with the ozone producing O2 and ClO. The ClO bombard with O atoms splitting the ClO up and the free Cl atom again bonds to another O3 molecule hence reducing it. One ClO can reduce several O3 molecules (up to 100,000) creating an ozone hole.

2Cl + O3 → 2ClO + 2O2

2ClO + 2O → 2Cl + 2O2