新课程学习·中旬
新課程學習·中旬
신과정학습·중순
Xinkecheng Xuexi(jiaoyuxueshu)
2014年
8期
88-88,90
,共2页
催化剂%种类%质量%过氧化氢%浓度
催化劑%種類%質量%過氧化氫%濃度
최화제%충류%질량%과양화경%농도
catalyst%variety%quality%hydrogen peroxide%concentration
过氧化氢,化学式为H2O2,其水溶液俗称双氧水,外观为无色透明液体,是一种强氧化剂,适用于伤口消毒及环境、食品消毒。同时,过氧化氢是中学化学实验室制取氧气最常用的试剂,也是比较安全、廉价的试剂。实验室制备氧气时,过氧化氢分解的化学方程式为:2H2O22H2O+O2↑。对催化剂的种类、用量以及过氧化氢的浓度对此反应的影响进行一些探究。
過氧化氫,化學式為H2O2,其水溶液俗稱雙氧水,外觀為無色透明液體,是一種彊氧化劑,適用于傷口消毒及環境、食品消毒。同時,過氧化氫是中學化學實驗室製取氧氣最常用的試劑,也是比較安全、廉價的試劑。實驗室製備氧氣時,過氧化氫分解的化學方程式為:2H2O22H2O+O2↑。對催化劑的種類、用量以及過氧化氫的濃度對此反應的影響進行一些探究。
과양화경,화학식위H2O2,기수용액속칭쌍양수,외관위무색투명액체,시일충강양화제,괄용우상구소독급배경、식품소독。동시,과양화경시중학화학실험실제취양기최상용적시제,야시비교안전、렴개적시제。실험실제비양기시,과양화경분해적화학방정식위:2H2O22H2O+O2↑。대최화제적충류、용량이급과양화경적농도대차반응적영향진행일사탐구。
Hydrogen peroxide, chemical formula H2O2,commonly known as the aqueous solution of hydrogen peroxide,the appearance is colorless transparent liquid,it is a strong oxidizing agent,suitable for wound disinfection,food and environment disinfection.At the same time,hy-drogen peroxide is the most commonly used reagents of making oxygen in the school chemistry laborator y ,it also is relatively safe and cheap reagent.Laboratory preparation of oxygen, hydrogen peroxide decomposition of chemical equation is:2H2O2 2H2O+O2↑So,the teacher ex-plores the kinds,dosage of catalyst and hydrogen peroxide concentration on the influence of the reaction.