QUESTION 5 How is CO2 removed from the atmosphere during silicate weathering? A.

Question

QUESTION 5 How is CO2 removed from the atmosphere during silicate weathering? A. Calcium silicate rocks react with gas phase CO2 to form CaCO3 and SiO2 CO2 dissolves in rainwater and reacts with calcium silicate rocks, delivering Ca and DIC to the oceans where CaCO3 precipitates CO2 is not removed from the atmosphere during silicate weathering CO2 dissolved in rainwater is trapped between the layers of clay minerals formed during weathering of silicate rocks OC OD.Co2 dissolved in rainwater is trapped between the layers of clay minerals formed during weathering of silicate rocks

Explanation / Answer

B. Co2 in the gaseous form is dissolved in rain water and forms carbonic acid which is weak. This acid when comes in the form of rain reacts with the silicate rocks. So during the reaction the calcium mixes with carbon dioxide to form calcium carbonate and silicate forms silica. The organisms that live in the ocean create shells which are solid form of calcium carbonate

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