carbon dioxide, or silica - names synonymous well-known carbon dioxide.According to the chemical classification, the substance - carbon oxide (IV), CO2.Under normal conditions, the compound is in the gaseous state, is colorless and odorless, but has a slightly sour taste.Soluble in water, forming carbonic (carbonate) acid.A feature of the carbon dioxide is that at normal atmospheric pressure (101 325 Pa or 760 mm Hg. V.) Does not exist in a liquid state, but only in the form of a gas or a so-called dry ice.Liquid carbon dioxide may be formed only when the boost pressure.In this form it can be transported in cylinders and used for its intended purpose: for welding, production of carbonated beverages, freezing and cooling food and fire extinguishers.This substance is used as a preservative and E 290, baking powder for the dough and the refrigerant.
Carbon dioxide - acidic oxide, so it can interact with the basic oxides and alkali, forming the salt - carbonates or bicarbonates, and water.Qualitative reaction to determine the CO 2 is its interaction with the calcium hydroxide.The presence of this gas will testify clouding of the solution and precipitation.Some of the alkali and alkaline earth metals (active) may burn in the atmosphere of carbon dioxide, depriving it of oxygen.Also, the carbon dioxide enters into chemical reactions and substitution thereof with organic elements.
found in nature and is part of the air shell of the Earth.In the environment it is isolated organisms during respiration, and the plants absorb it during photosynthesis and used in physiological and biochemical processes.
Because of its high heat capacity, compared to other atmospheric gases, uglikisly with increasing gas concentration in the environment leads to overheating, because of the lower heat transfer in space.A rise in temperature leads to melting of glaciers and the resulting climate change on the globe.Scientists estimate and concluded that the solution to this problem (in the fight against the greenhouse effect) can help green plants that are able to learn a lot more CO2 than it is now thrown.
Despite the fact that carbon dioxide is involved in the metabolism of plants and animals, increased its content in the atmosphere can cause drowsiness, weakness, headache, and even asphyxiation.To avoid hypercapnia is necessary to ventilate the room, especially in places of gathering a large number of people.
Thus, carbon dioxide - is an acidic oxide, which occurs in nature and is a product of the metabolism of flora and fauna.Its accumulation in the atmosphere is the trigger of the greenhouse effect.Carbon dioxide by reaction with water forms an unstable carbonic acid capable of disintegrating into water and CO2.
