how do you prepare carbon dioxide?how is it tested?
Answers
Answer:
Carbon dioxide is produced whenever an acid reacts with a carbonate. This makes carbon dioxide easy to make in the laboratory. Calcium carbonate and hydrochloric acid are usually used because they are cheap and easy to obtain. Carbon dioxide can be collected over water.
Explanation:
Carbon dioxide reacts with calcium hydroxide solution to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.
Answer:
Carbon dioxide is produced whenever an acid reacts with a carbonate. This makes carbon dioxide easy to make in the laboratory. Calcium carbonate and hydrochloric acid are usually used because they are cheap and easy to obtain.
Carbon Dioxide Reactants
Only two materials are needed to make carbon dioxide:
calcium carbonate (marble chips)
5 M hydrochloric acid
Carbon Dioxide Gas Preparation
Add 5 M hydrochloric acid to 5 - 10 g marble chips. Carbon dioxide gas is released by the chemical reaction.
Collect the carbon dioxide from the upward displacement of air in a hood. Carbon dioxide is about 60% more dense than air, so it will fill the reaction container.
Chemical Reaction
2HCl + CaCO3 → CO2+ CaCl2 + H2O
What is the method for collecting carbon dioxide gas?
Carbon capture technology is an effort to separate CO2 from exhaust air in a large power plant (col, oil or natural gas fired power plant). After separation, it is pumped in liquid phase in A pipeline to a place where it will be stored. This process of transfer and injection require high pressure pumps and high pressure pipeline.
The storage has to be a place where CO2 stay there for minimum 100 years, without achieving the atmosphere. Perhaps it can stay trapped there for centuries. An old an unused coal mine could be a place to store it.
This technology is costly, as it is necessary to separate, transfer and inject CO2 underground. There are no profits here, only costs
I extract this article from Wikipedia. I think it can explain the process.
Carbon capture and storage
Not to be confused with .
Schematic showing both terrestrial and geological sequestration of carbon dioxide emissions from a coal-fired plant
Carbon capture and storage (CCS) (or carbon capture and sequestration or carbon control and sequestration
) is the process of capturing waste (CO
2
) from large , such as , transporting it to a storage site, and depositing it where it will not enter the atmosphere, normally an underground . The aim is to prevent the release of large quantities of CO
2
into the atmosphere (from fossil fuel use in power generation and other industries). It is a potential means of the contribution of to
and .
Although CO
2
has been injected into geological formations for several decades for various purposes, including , the long term storage of CO
2
is a relatively new concept. The first commercial example was the in 2000.
Another example is . 'CCS' can also be used to describe the of CO
2
from ambient air as a technique.
An integrated pilot-scale CCS power plant was to begin operating in September 2008 in the eastern German power plant run by utility , to test the technological feasibility and economic efficiency. CCS applied to a modern conventional power plant could reduce CO
2
emissions to the atmosphere by approximately 80–90% compared to a plant without CCS.
The estimates that the economic potential of CCS could be between 10% and 55% of the total carbon mitigation effort until year 2100.
Carbon dioxide can be captured out of air or fossil fuel power plant using (or ), membrane gas separation, or adsorption technologies. Amines are the leading carbon scrubbing technology. Capturing and compressing CO
2
may increase the energy needs of a coal-fired CCS plant by 25–40%.
These and other system costs are estimated to increase the cost per watt-hour energy produced by 21–91% for fossil fuel power plants.
Applying the technology to existing plants would be more expensive, especially if they are far from a sequestration site. A 2005 industry report suggests that with successful research, development and deployment (RD&D), sequestered coal-based electricity generation in 2025 may cost less than unsequestered coal-based electricity generation today.