NH3(g)와 HCl(g)의 분자 확산 실험에서 간편성, 안전성, 재현성을 고려한 실험방법 연구

분자 확산;암모니아;염화수소;재현성;안전성;교실환경;molecular diffusion;NH3;HCl;reproducibility;safety;school environment;540

사범대학 과학교육과(화학전공) ;

University:서울대학교 대학원

关键词: 분자 확산;    암모니아;    염화수소;    재현성;    안전성;    교실환경;    molecular diffusion;    NH3;    HCl;    reproducibility;    safety;    school environment;    540;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/128125/1/000000017727.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

The experiments on diffusion rate of ammonia and hydrogen chloride gases in middle school and high school science text books have troubles for lack of enough and proper information on experiment equipments or processes as well as issues of safety with respect of school lab environment. This study studies gas’s diffusion experiment equipment in terms of these simplicity, safety, and reproducibility in the diffusion experiment with NH3(aq) and HCl(aq) in a long tube. Experimental conditions including tube;;s length and diameter, cotton stopper;;s thickness, partial pressure of each gas on the concentration of NH3(aq) and HCl(aq), and reagent injection time interval at both ends of a tube are studied to get optimal experiment condition. This study will help teachers and students to observe scientific phenomenon objectively and to reduce experiment’s trial and error under safe environment at school.