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the claim

Acid in rainwater dissolves rocks that contain calcium carbonate.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 sources for · 0 against

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Is it true that acid in rainwater dissolves rocks that contain calcium carbonate?

Yes. Acidic water, particularly rainwater containing carbonic acid, reacts with and dissolves calcium carbonate rocks such as limestone.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

The analysis

The claim is a well-established geochemical fact regarding carbonate weathering by acid inputs (such as carbonic acid in rain/water). Multiple retrieved papers (e.g., [1], [2], [3]) confirm the mechanism and rates of limestone and calcium carbonate dissolution driven by acid leaching.

Evidence for · 3
Release of iron oxide in red‐brown soil formation from the weathering of limestone. 1.—Effect of carbonic acid
1959
Demonstrates through laboratory leaching conditions that carbonic acid in water effectively dissolves limestone and removes alkaline earth carbonates.
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Khan, D. H. (1959). Release of iron oxide in red‐brown soil formation from the weathering of limestone. 1.—Effect of carbonic acid. doi.org. https://doi.org/10.1002/jsfa.2740100906

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More for · 2
New estimate of chemical weathering rate in Xijiang River Basin based on multi-model.
2021
Shows that carbonic acid is a primary driver of carbonate rock weathering and chemical denudation in river basins.
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Y, Z., S, Y., S, H., P, S., F, W., Z, L., H, Z., X, L., & P, Z. (2021). New estimate of chemical weathering rate in Xijiang River Basin based on multi-model.. doi.org. https://doi.org/10.1038/s41598-021-84602-1

Seasonal dynamics of karst surface dissolution based on a limestone tables experiment (Slovak karst)
2023
Documents ongoing chemical denudation and dissolution rates of limestone formations driven by natural acidic water inputs.
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Gessert, A. & Hochmuth, Z. (2023). Seasonal dynamics of karst surface dissolution based on a limestone tables experiment (Slovak karst). doi.org. https://doi.org/10.5038/1827-806x.52.2.2468

What does the evidence say?

The claim is a well-established geochemical fact regarding carbonate weathering by acid inputs (such as carbonic acid in rain/water). Multiple retrieved papers (e.g., [1], [2], [3]) confirm the mechanism and rates of limestone and calcium carbonate dissolution driven by acid leaching.

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