| 词汇 | hydroxide |
| 释义 | hydroxide noun[ C ] chemistry specializeduk /haɪˈdrɒk.saɪd/ us /haɪˈdrɑːk.saɪd/ a chemical compound that contains the hydroxyl ion, or a compound of an oxide with water: 氢氧化物（含有氢氧离子的复合物，或氧化物的水合物） calcium hydroxide氢氧化钙 Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium lithium manganese nickel plutonium quicksilver selenium silicon sodium sulphur transition metal hydroxide | American Dictionaryhydroxide noun[ C ] us/hɑɪˈdrɑk·sɑɪd/ chemistry a chemical that contains a combination of oxygen and hydrogen atoms with a negative electrical charge Examples of hydroxidehydroxide Diluted solutions of zinc and copper chloride and sodium hydroxide were used. Samples of 10-50 g of coal were macerated in nitric acid and then cleared in potassium hydroxide. The worker will generally prefer to use solutions of potassium hydroxide, with which practically any required humidity can be obtained. This was interpreted as precipitation of iron phosphates or iron (oxy)hydroxides, which may effectively adsorb phosphorus. Heptane-containing solutions with identical concentrations to those of the acetic acid and sodium hydroxide treatments were utilized with the same protocol as above. Typically, most of the pebbles are coated by iron hydroxide. The sulfur could be applied to target powdery mildew and the copper hydroxide to target peach leaf curl. He was given a glass of sodium hydroxide, which he drank. Evidence for a hydroxide ion bridging tow magnesium ions at the active site of the hammerhead ribozyme. If the serum phosphorus is greater than 6mg/dl (1.9mmol/l), aluminum hydroxide should be administered. They dissolved lithium hydroxide in the water to provide ions to carry a current between the electrodes. This procedure was repeated with identical concentrations and durations using sodium hydroxide solutions instead of acetic acid. All terminal ligands were taken to be hydroxides and waters, the complex was chosen to be neutral and the metal spin-coupling was taken to be ferromagnetic. Iron hydroxide thus precipitated was filtered and washed thoroughly with double-distilled water. Minute naviculate structures (<2.2 mm long) resembling diatoms are of unknown origin but are probably composed of thorium hydroxide. 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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