“dehydration”的概念、定义、翻译、参考文献-科学参考

dehydration

Chemistry

1. Removal of water from a substance.
2. A chemical reaction in which a compound loses hydrogen and oxygen in the ratio 2:1. For instance, ethanol passed over hot pumice undergoes dehydration to ethene:
$C_{2} H_{5} {O H - H}_{2} O \to {CH}_{2} {= C H}_{2}$
Substances such as concentrated sulphuric acid, which can remove H₂O in this way, are known as dehydrating agents. For example, with sulphuric acid, methanoic acid gives carbon monoxide:
${H C O O H - H}_{2} O \to C O$

Chemical Engineering

Geology and Earth Sciences

Removal of water, especially from a chemical compound by heat, sometimes in the presence of a catalyst or dehydrating agent, e.g. sulphuric acid. Also refers to removal of water from crystals, oil, etc., commercially by distillation, chemicals, or heat. In metamorphism, prograde metamorphic reactions commonly involve dehydration of hydrous minerals.

单词	dehydration
释义	dehydration Chemistry 1. Removal of water from a substance. 2. A chemical reaction in which a compound loses hydrogen and oxygen in the ratio 2:1. For instance, ethanol passed over hot pumice undergoes dehydration to ethene: $C_{2} H_{5} {O H - H}_{2} O \to {CH}_{2} {= C H}_{2}$ Substances such as concentrated sulphuric acid, which can remove H₂O in this way, are known as dehydrating agents. For example, with sulphuric acid, methanoic acid gives carbon monoxide: ${H C O O H - H}_{2} O \to C O$ Chemical Engineering The process of removing water from a substance. See drying. Geology and Earth Sciences Removal of water, especially from a chemical compound by heat, sometimes in the presence of a catalyst or dehydrating agent, e.g. sulphuric acid. Also refers to removal of water from crystals, oil, etc., commercially by distillation, chemicals, or heat. In metamorphism, prograde metamorphic reactions commonly involve dehydration of hydrous minerals.
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