The main reason is due to human activities during and after the industrial revolution. There has been an increase in carbon dioxide concentrations in the atmosphere from about 280 ppm in 1850 to 364 ppm in 1998. The Carbon dioxide released by baking powder or yeast that makes cake batter rise is the best example of the use of carbon dioxide in everyday life.ĭue to several human activities, the amount of CO 2 released into the atmosphere has been rising extensively during the past few years. It is one of the parts of medical gases because it promotes exhalation. Large quantities of solid carbon dioxide ( in the form of dry ice) are used in large-scale refrigeration. It is used in carbonated beverages, soft drinks, and beers to make them fizzy. It is used in promoting the growth of plants in greenhouses. Plants convert carbon dioxide to oxygen during a process called photosynthesis, using both carbon and oxygen to make carbohydrates.Ĭarbon dioxide is also used as a refrigerant. Now, let us know about some uses of CO 2 gas. Reaction with alkali to give carbonates and bicarbonates. It turns lime water milky.Įquation which shows CO 2 behaves as an acid:ĬO 2 + H 2 O → H 2 CO 3 → H+(aq) + HCO 3 - (aq) It forms a weak carbonic acid when dissolved in water. It is soluble in water, solubility decreases as temperature increases. It has a melting point of -55.6☌ and has a boiling point of -78.5☌. Now we will study about properties and uses of carbon dioxide. In this topic, we have discussed the CO 2 definition. It is also produced by fermentation and cellular respiration. It reacts with alkalis to give carbonates and bicarbonates as a product. It reacts with water to produce carbonic acid. Atmospheric CO 2 can be extracted from natural sources like volcanic outgassing, combustion of organic matter, and the respiration processes of living aerobic organisms, and man-made sources of carbon dioxide can be obtained from the burning of fossil fuels for power generation and transport use. It has a density of 1.977g/ml.Ĭarbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere, but it is a minor component of Earth's atmosphere. It is a colourless, odourless gas and is soluble in water, ethanol, and acetone. It is one of the important ingredients in photosynthesis, the process by which green plants prepare food and energy. However, most scientists agree that it would be dangerous for humans to breathe air containing higher concentrations of carbon dioxide than they have in the past.Ĭarbon dioxide is a chemical compound composed of one carbon and two oxygen atoms bonded together. Despite this, natural sources of carbon dioxide are much larger than artificial ones.Ĭarbon dioxide is believed to cause negative health effects in large concentrations, but the possible consequences of living with lower levels have not yet been studied extensively. Burning fossil fuels returns carbon dioxide to Earth's atmosphere after it was stored deep underground over millions of years, while deforestation reduces the number of plants that absorb it. Humans have played a significant role in increasing the concentration of this gas by burning fossil fuels and clearing forests, among other activities. Increased Concentration of Carbon Dioxide It also helps drive the carbon cycle, which is essential for life on Earth to exist.
This makes it easier for life on Earth to thrive. It helps trap heat near the Earth's surface, meaning that less of it escapes into space. Carbon dioxide is abundant in the Earth's atmosphere (amounting to about 393 ppm, or parts per million) and plays a vital role in regulating global climate. They are often referred to as greenhouse gases because they allow sunlight to enter but do not allow it to leave, thus heating the lower atmosphere. Carbon dioxide also helps regulate the temperature of the atmosphere and the planet as well. It is essential for photosynthesis, which all plants need to survive. Carbon dioxide is a naturally occurring chemical compound that plays an integral role in the Earth's ecosystem.
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