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The dissolution of limestone by rainwater containing carbonic acid is the perfect example of chemical weathering.
Karst topography is formed by chemical weathering, and affects the underlying carbonate rock (limestone or dolomite). This occurs under specific drainage conditions. Slightly acidic water (carbonic acid in solution) is the active agent.
Karst topography is usually created by dissolved limestone. Therefore, limestone makes up Karst topography.
Principally chemical as the limestone is dissolved by carbonic acid (rain-water acidified by absorbed atmospheric CO2). As the cave develops mechanical weathering of its stream-passages may contribute, by abrading the rock with sand carried in the stream.
type of weathering represented by dissolution of lime stone in acid is known as chemical weathering and is mainly expirienced in coastal regions as rain water dissoves CO2 in the air forming a weak carbonic acid which then dissolves limestone in the area in the process of chemical weathering and it results in the formation of karst scenary.
The dissolution of limestone by rainwater containing carbonic acid is the perfect example of chemical weathering.
This is chemical weathering. Carbonic acid (and often sulphuric acid from SO2) destroy CaCO3 (limestone) through chemical attack.Carbonic acid is formed by reaction of H2O and CO2 to create H2CO3.
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Carbonic acid reacts chemically with limestone, which is observed as weathering. As such, carbonic acid weathering is a chemical, not physical, change.
No. It dissolves limestone slowly. It may take centuries for a limestone outcrop to show visible weathering.
Chemical Weathering
Carbon dioxide dissolved in water is a cause of chemical weathering.
The forests that grows over the limestone forms mulch that produces the acid required. That's true but the prime solvent is Carbonic Acid: atmospheric carbon dioxide dissolved into rain-water.
Karst topography is formed by chemical weathering, and affects the underlying carbonate rock (limestone or dolomite). This occurs under specific drainage conditions. Slightly acidic water (carbonic acid in solution) is the active agent.
Yes, carbonic acid dissolves limestone as does any other acid. As carbonic acid is not a very strong acid this process is very sluggish, though.
Karst topography is usually created by dissolved limestone. Therefore, limestone makes up Karst topography.
Principally chemical as the limestone is dissolved by carbonic acid (rain-water acidified by absorbed atmospheric CO2). As the cave develops mechanical weathering of its stream-passages may contribute, by abrading the rock with sand carried in the stream.