利用手持技术比较强酸弱酸的pH和电导率  

Using of the Handheld Technology to Compare pH and Conductivity of the Strong Acid and the Weak Acid

作　　者：林锦萍[1] 衷明华[1] 

机构地区：[1]韩山师范学院化学系,广东潮州521041

出　　处：《广东化工》2010年第8期97-97,103,共2页Guangdong Chemical Industry

摘　　要：利用手持技术仪器探究盐酸(HCl)和醋酸(HAc)两种不同强度的酸在相同条件下的pH和电导率,把抽象思维转化为直观数据,通过直观数据鲜明地比较它们之间的区别,从而更进一步让学生清楚地比较强酸和弱酸电离时pH和电导率的差别,认识溶液的导电性强弱与溶液中总离子数的多少有密切的联系,以及弱酸溶液是无法完全电离的这一理论知识。Using handheld technology devices to explore the hydrochloric acid（HCl） and acetic acid（HAc） which were of two different acid strength under the same conditions of pH and conductivity,changing the abstract thinking into visual data,comparing their distinguish visually by data,however,making students to further compare difference of pH and electrical conductivity ionizated by strong acid and weak acid clearly,recognize closed relaton between strength of solution’s conductivity and number of total ions,and the theory which the weak acid solution is not fully ionized.

关 键 词：手持技术 强酸 弱酸 PH 电导率 比较 

分 类 号：O646.14[理学—物理化学]