生活中有人用醋浸泡有水垢的水壶和水杯达到去污的目的,请分析是利用醋酸什么性质，是否科学安全
推荐回答（3个）
安全啊。醋酸是一种酸性较强的弱酸，与水垢（实质是碳酸钙）发生化学反应生成酸性较弱的碳酸（强酸制弱酸原理）。碳酸不稳定，会分解为水和二氧化碳，二氧化碳逸出到空气中。
所以用醋除去水垢是相当安全的哈。
醋的主要成份是醋酸（化学式CH3COOH）
水垢的主要成分是碳酸钙（化学式CaCO3）和氢氧化镁（化学式Mg(OH)2）.
碳酸钙和氢氧化镁都是难溶于水的盐，
醋酸可以和碳酸钙或氢氧化镁发生复分解反应，生成新的可溶于水的盐，即除去水垢。
方程式如下：
CH3COOH+CaCO3==(CH3COO)2Ca+CO2+H2O
CH3COOH+Mg(OH)2=(CH3COO)2Mg+2H2O
孔子学院(Confucius Institute)是中国在世界各地设立的教育和文化交流机构。推广汉语、传播中国文化是设立该机构的目的。孔子学院最重要的一项工作就是给世界各地的汉语学习者提供标准的教材以及正规的汉语学习渠道。全球首家孔子学院于2004年在韩国首尔(Seoul)成立，目前已遍布100个国家。孔子学院有力地推动了中国文化与各国文化的交流与融合(integration)。 Confucius Institute is an institute of education and cultural communication established by China all over the world. Its aim is to promote Chinese language and spread Chinese culture. The most important task of Confucius Institute is to provide standard textbooks and a formal channel to learn Chinese for learners all over the world. The first Confucius Institute opened in 2004 in Seoul, South Korea. At present, it has been established in 106 countries. Confucius Institute has greatly promoted the exchange and integration of cultures between China and the rest of the world.
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