geog問題....關於chemical weathering
why carbonation will occur in some very cold place such as arctic area?
1 個解答
評分
- SuzanneLv 51 十年前最愛解答
Carbonation is the process in which atmospheric carbon dioxide leads to solution weathering. Carbonation occurs on rocks which contain calcium carbonate such as limestone and chalk. Carbonation takes place when rain combines with carbon dioxide to form a weak carbonic acid which reacts with calcium carbonate (the limestone) and forms calcium bicarbonate. This process speeds up with a decrease in temperature and therefore is a large feature of glacial weathering.
The reactions as follows:
CO2
+
H2O
->
H2CO3
carbon dioxide
+
water
->
carbonic acid
H2CO3
+
CaCO3
->
Ca(HCO3)2
carbonic acid
+
calcium carbonate
->
calcium bicarbonate
It will be more active in cold place.
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