| 词汇 | methyl-orange |
| 释义 | methyl orange noun[ U ] chemistry specializeduk /ˌmeθ.əl ˈɒr.ɪndʒ/ us /ˌmeθ.əl ˈɔːr.ɪndʒ/ a substance used by scientists to show the amount of acid in a substance甲基橙（用于显示含酸量的物质） Chemistry: types of chemical acid salt aerogel albumin alkali metal alkaline alkaloid antioxidant carbohydrate homologous series inorganic isopropanol ketone lectin melamine monosaccharide mothball propellant saline soluble sulphide Examples of methyl orangemethyl orange The diluted solution is acid in reaction toward litmus and phenolphthalein and alkaline toward methylorange. From Project Gutenberg Dissolve the ash in distilled water and titrate total alkalinity, using as indicator methylorange cold or litmus boiling. From Project Gutenberg For the carbonates about 1 gram may be weighed, washed into a 400 cubic centimeter beaker, diluted with distilled water, methylorange indicator added and titrated with normal acid. From Project Gutenberg If borax is present the carbon dioxide is boiled off after neutralizing exactly to methylorange; cool, add mannite and phenolphthalein and titrate the boric acid with standard alkali. From Project Gutenberg These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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