Generation of NO2 by Lead Nitrate Pyrolysis: Never do Modifications a Prima Vista
Generation of NO2 by Lead Nitrate Pyrolysis: Never do Modifications a Prima Vista
Author(s): Vlsdimir M. PetrusevskiSubject(s): Social Sciences, Education, School education, Vocational Education, Adult Education, State/Government and Education, Inclusive Education / Inclusion, Sociology of Education
Published by: Национално издателство за образование и наука „Аз-буки“
Keywords: nitrogen dioxide; pyrolysis; lead(II) nitrate; sodium chloride; metathesis reaction
Summary/Abstract: Generation of nitrogen dioxide is a well-known demonstration/experiment, usually performed by pyrolysis of Pb(NO3)2. In order to prevent obstructing the glass tubes or the test-tube where NO2 is generated, one may safely use a homogenized mixture of lead(II) nitrate and dry sand. Aesthetically it is not quite appealing, so during the same lesson a colleague experimenter decided to change the standard approach and to use table salt (sodium chloride) instead of sand. However, the result of the experiment turned to be a flaw! This appears to be one more proof for the correctness of the general experimenter’s philosophy: never improvise if you do not know the outcome.
Journal: Обучение по природни науки и върхови технологии
- Issue Year: 30/2021
- Issue No: 3
- Page Range: 239-242
- Page Count: 4
- Language: English
- Content File-PDF