What is global warming meaning in environmental chemistry?

 

Global warming meaning introduction

Global warming is a very important issue in environmental science. In a word, global warming meaning, an increase in the average temperature of the earth.

The basic point is that the visible light rays from the sun are incident on the earth's surface and it is reflected by the earth's surface that absorbed by various gaseous substances of atmosphere as it returns to space.

This increases the average temperature of the atmosphere.This phenomenon is called global warming.

 

Global warming explanation

 The average temperature of the earth is around 20 degrees Celsius.  It is less in some areas and more in others.

In temperate countries, especially in winter, the temperature drops to freezing. Again in tropical countries this temperature is much higher.

However, in the last 50 years, the average global temperature has been rising rapidly. Environmentalists see that this trend accelerating over time.

 

Scientists say that if global warming cannot be stopped, global average temperatures could rise by up to 1 degree Celsius per every ten years.

 

 

Why is carbon dioxide a greenhouse gas?

Introduction

The heat from the sun is reflected from the earth's surface and goes back into space. This heat is absorbed by various gaseous elements in the atmosphere as it returns to space.

In this way they increase temperature of atmosphere. These gaseous elements in the atmosphere are called greenhouse gases.

Now carbon dioxide is a greenhouse gas. This is because carbon dioxide, like many other gaseous elements in the atmosphere, can absorb light from the sun.

This increases the average temperature of the earth's surface. This is why carbon dioxide is called greenhouse gas.

 

How does CO2 increase the average temperature of the earth?

 

The thermal energy of sunlight causes the warming of the atmosphere adjacent to the earth's surface.

However, carbon dioxide gas plays an important role in increasing the temperature of the atmosphere.

The visible or little extent of ultraviolet rays coming from sunlight that fall on the earth's surface has a wave length 400-750 nm. 42% of this sunlight is absorbed by the atmosphere, land and sea.

34% of the incident light rays is reflected from the earth's surface and goes back into space and 23% is used to evaporatethe water and drive the water vapor for the water cycle.

What is the simplest way for converting CO2 to O2?

 

What is the simplest way for converting CO2 to O2?

 

Converting CO2 to O2 is not easy process. Because of carbon dioxide is a colorless inert gas. The oxidation number of carbon in carbon dioxide is +4. This is its highest oxidation number.

Thus the carbon in carbon dioxide cannot increase its oxidation number but can only reduce it. For this reason it has oxidation properties but no reducing properties.

But there is a strong affinity of oxygen to carbon atom. This is why carbon dioxide is a stable inert gas. Oxygen is not released easily by the dissociation of CO2.

Besides, oxygen gas cannot be produced directly from carbon dioxide in the laboratory in general.

However, at very high temperatures, carbon dioxide can decompose into carbon and oxygen and produce oxygen.

 

The best way for converting CO2 to O2 is via photosynthesis in plants, algae and bacteria. In this process, green plants absorb water from the soil and carbondioxide from the air in the presence of sunlight to produce sugars.

What are the various sources of carbon dioxide emissions?

 

Introduction

In fact, carbon dioxide gas is not considered as an air pollutant. However, huge amounts of carbon dioxide gas entering the atmosphere from different sources cause climate change.

As a result, carbon dioxide also causes environmental pollution. So carbon dioxide is also a polluting gas.

Combustion of fossil fuels, decomposition of carbonates and biological decay are the main source of carbon dioxide emissions in the atmosphere.

Combustion of fossil fuels is the easiest and cheapest way to produce the energy needed for various industries or vehicles. Notable among these fossil fuels are coal, mineral oil, wood (forest fires, domestic fuel) etc.

 

The main source of carbon dioxide in the atmosphere is various natural and man-made causes.

But the important thing is that all of these natural and man-made causes are related to the combustion of fossil fuels.