大多数水含有一些二氧化碳，使得水显弱酸性，能够侵蚀石灰岩中的碳酸钙。
Most water contains some carbon dioxide making it a weak acid that can eat away at the calcium carbonate in limestone.
大多数水含有一些二氧化碳，使得水显弱酸性，能够侵蚀石灰岩中的碳酸钙。
Most water contains some carbon dioxide, making it a weak acid that can eat away at the calcium carbonate in limestone.
该色素在酸性条件下显红色。
硝酸的酸性较硫酸和盐酸小，易溶于水，在水中完全电离，常温下其稀溶液无色透明，浓溶液显棕色。
Nitric acid is sulfuric acid and hydrochloric acid small, easily soluble in water, in the water under the ionization completely colorless transparent, strong dilute solution show brown solution.
硝酸的酸性较硫酸和盐酸小，易溶于水，在水中完全电离，常温下其稀溶液无色透明，浓溶液显棕色。
Nitric acid is sulfuric acid and hydrochloric acid small, easily soluble in water, in the water under the ionization completely colorless transparent, strong dilute solution show brown solution.
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