MasteryExams
Geography • Physical GeographyMedium

Which specific type of chemical weathering involves the reaction of minerals with atmospheric or dissolved carbon dioxide to form soluble carbonates?

A. Oxidation
B. Hydrolysis
C. Carbonation✓ Correct Answer
D. Solution

💡 Solution & Explanation

Carbonation is the chemical reaction where carbon dioxide dissolved in rainwater forms weak carbonic acid, which reacts with calcium carbonate in rocks like limestone to produce soluble calcium bicarbonate, facilitating cave formation and karst topography. Oxidation involves the combination of metallic minerals with oxygen to form oxides like rust, whereas hydrolysis entails water molecules directly breaking down silicate crystal lattices. Solution refers to the simple dissolving of soluble minerals such as halite without chemical transformation. Karst landscapes provide classic examples of groundwater sculpture through carbonation.

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