The reaction of metallic sodium and water is high school chemistry compulsory content and experimental textbooks is the sodium is put into a beaker of water and phenolphthalein, observed metal molten sodium is a ball in the water swimming rapidly and the solution turned red, so as to get the conclusion of sodium and water reaction to generate sodium hydroxide and hydrogen. But it is not possible to test whether the generated gas is hydrogen. In view of the above problems, the author uses the micro chemical instrument to improve the reaction between sodium and water, to reduce the dosage of the drug, and to test whether the gas produced by the reaction is hydrogen.
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