Tropospheric Hydroxyl Radical Removal
The hydroxyl radical ($OH^{\cdot}$) is highly reactive and plays a vital role in atmospheric chemistry, acting as a primary oxidant that initiates the removal of many trace gases in the troposphere.
Dominant Removal Species Identification
The question asks for the species that primarily removes the hydroxyl radical ($OH^{\cdot}$) in the troposphere. Among the given options, Carbon Monoxide (CO) is recognized as the most significant sink for $OH^{\cdot}$ globally.
The reaction involved is:
This reaction consumes $OH^{\cdot}$ radicals, converting CO into $CO_{2}$. While methane ($CH_{4}$) also reacts with $OH^{\cdot}$, and NO participates in complex atmospheric cycles, the reaction with CO represents the largest removal pathway for $OH^{\cdot}$ in the overall troposphere, particularly in polluted regions.
Therefore, Carbon Monoxide (CO) is the dominant species responsible for removing hydroxyl radicals in the troposphere.
Important Questions from Environmental Chemistry - Teaching
Which of the following chemicals is used to cause artificial rain (cloud seeding)?
Which of the following is a non-renewable source of energy?
- Consider the following statements about solubility of gases in surface water.
A. Equilibrium concentration of a dissolved gas in water as per Henry's law is referred to as its saturation value
B. There may be more dissolved gas in water than its saturation value in water
C. It is more common for a dissolved gas to be present in less amount in water than its saturation value in water
D. The excess or deficit of a dissolved gas compared to its saturation value cannot be brought back to saturation level in water
E. Solubility of gas depends on partial pressure of the gas but is independent of purity of water
Choose the correct answer from the options given below: - Which is not a preferable characteristics of water to be used as green solvent ?
- Which of the following reaction involves the principle of green chemistry ?
