How is oxygen paramagnetic

Therefore, the current gives an accurate measurement of the concentration of oxygen in the gas mixture. As the instrument uses an absolute measurement principle, once built and factory calibrated, it does not require any further factory calibration. Factory calibration consists of calibration of the electronics to accept the input signal from the detection cell and checking that the instrument then reads correctly on air, Some other gases are also paramagnetic and their presence in the gas stream can cause a false reading.

The effect is relatively small in most cases. Close Search. Displaying 1 - 10 of results for Cyclic Corrosion Cabinet Product. Salt Spray Cabinet Product. Salt Fog Condenser Box Product. Humidity Conditioning Cabinet Product. Humidity Cabinet Product. Double seam defects can dent your reputation and finances Knowledgebase. Can seam inspection — frequently asked questions Knowledgebase. How to measure a double seam Knowledgebase.

Double seaming process guide Knowledgebase. Displaying 1 - 10 of results 1 2 3 … 39 Next ». Theory The operating principle of the paramagnetic sensor is the paramagnetic susceptibility of the oxygen molecule, a physical property which distinguishes oxygen from most other gases.

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This may take some time to load. Loading related content. Jump to main content. Jump to site search. You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page. As a result of the parallel spin of the unpaired electrons, molecular oxygen is paramagnetic and is attracted by a magnetic field.

If desired, this can be contrasted with the behavior of liquid nitrogen, which exhibits no such attraction. This is a good demonstration for linking the new concept of molecular orbitals with the established concept of atomic orbitals. Withdraw the test tube containing liquid oxygen from the Dewar flask using the attached string. Still holding the tube by the string, bring the test tube close to the magnet. The liquid oxygen is visibly attracted to the magnetic field. By continuing to view the descriptions of the demonstrations you have agreed to the following disclaimer.

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The custom demos section of the website is used by UO chemistry instructors to schedule demonstrations that are not listed in the database. Do not proceed to schedule a custom demo unless you have already conferred with the lecture demonstrator about it. In general chemistry courses, students learn that covalent bonds can come as either single, double or triple bonds, which are identifies by their bond order.

Both bond length and bond energy changes as the bond order increases and as the number of electrons shared between two atoms in a molecule increases, the bond order of a bond increases, the strength of the bond increases and the distance between nuclei decreases Table 9.

The above trend can be observed in the first row diatomics in Figure 9. The bond order can be determined directly form the molecular orbital electron configurations.