Question

the water percolating through ___ dissolves the soluble minerals
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Answer 1

Answer:

Explanation: Chemical weathering results from chemical changes to minerals that become unstable when they are exposed to surface conditions. The kinds of changes that take place are highly specific to the mineral and the environmental conditions. Some minerals, like quartz, are virtually unaffected by chemical weathering, while others, like feldspar, are easily altered. In general, the degree of chemical weathering is greatest in warm and wet climates, and least in cold and dry climates. The important characteristics of surface conditions that lead to chemical weathering are the presence of water (in the air and on the ground surface), the abundance of oxygen, and the presence of carbon dioxide, which produces weak carbonic acid when combined with water. That process, which is fundamental to most chemical weathering, can be shown as follows:

H2O + CO2 —->H2CO3    then   H2CO3 —-> H+     + HCO3–,

water + carbon dioxide —-> carbonic acid   then    carbonic acid  —-> hydrgen ion + carbonate ion

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