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一、冰棍着火 表演用品:烧杯,量筒,玻璃棒,表面皿,小纸盒;醋酸钙,95%乙醇,高锰酸钾,浓硫酸。表演前的准备 称取22克醋酸钙晶体[Ca(CH_3COO)_2·H_2O],加50毫升蒸馏水,制成饱和溶液。 表演: 1.自制“冰棍” 在250毫升烧杯中,注入170毫升95%乙醇,再加入30毫升醋酸钙饱和溶液,则有白色凝胶生成(即固体酒精)。
One, ice lolly fire performance supplies: beaker, measuring cylinder, glass rod, watch glass, small carton; calcium acetate, 95% ethanol, potassium permanganate, concentrated sulfuric acid. Pre-performance preparation Weigh 22 g of calcium acetate crystals [Ca(CH 3 COO) 2 ·H 2 O] and add 50 ml of distilled water to make a saturated solution. Performances: 1. Homemade “popsicle” In a 250 ml beaker, inject 170 ml of 95% ethanol, then add 30 ml of calcium acetate saturated solution, then a white gel is formed (ie solid alcohol).