1 / 13

Distilling air

Distilling air. CHEM 114 Fundamental Chemistry. Making sulfur. CHEM 114 Fundamental Chemistry. Sulfur. CHEM 114 Fundamental Chemistry. Sulfur oxides and oxoanions. :. :. :. :. :. :. SO 2. S. O. :. :. :. :. O. :. :. :. :. :. :. :. :. :. :. O. S. O. :. :. :. SO 3.

varen
Télécharger la présentation

Distilling air

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Distilling air CHEM 114 Fundamental Chemistry

  2. Making sulfur CHEM 114 Fundamental Chemistry

  3. Sulfur CHEM 114 Fundamental Chemistry

  4. Sulfur oxides and oxoanions : : : : : : SO2 S O : : : : O : : : : : : : : : : O S O : : : SO3 : : O : CHEM 114 Fundamental Chemistry

  5. Sulfur CHEM 114 Fundamental Chemistry

  6. Oxygen and the chalogens Oxygen is a paramagnetic gas. There is also O3 (ozone). Three categories of oxides: O2–, O22– and O22–. Parent compound of O22– is H2O2, a weak acid (hydrogen peroxide). Halides; OF2; the rest we’ll consider as oxides. • Elemental sulfur has many forms. • Gas: S2, S3 and S4 molecules. • Liquid sulfur: mostly S2 at high temperature, mostly S8 and chains at low temperature. • Solid sulfur; several forms of S8, also ‘plastic’ sulfur and helical sulfur. Oxides: SO2 and SO3, as well as some minor lower valent oxides. SO2 hydrates to H2SO3. SO3 hydrates to H2SO4 Halides: S2F2, SF4, SF6; SnCl2, SCl4 (unstable); SnBr2; S2I2 (unstable) • Elemental selenium has three stable allotropes. • Red: several crystalline forms, all Se8 • Black: amorphous • Grey: metallic CHEM 114 Fundamental Chemistry Oxides: SeO2 and SeO3 (less stable) as well as some minor lower valent oxides. SeO2 hydrates to H2SeO3. SeO3 hydrates to H2SeO4 Halides: SeF4, SeF6; SeCl2,Se2Cl2, SeCl4; Se2Br2. Tellurium: silvery white semi-metal, photoconductive.

  7. Halogens CHEM 114 Fundamental Chemistry

  8. Fluorides and oxides CHEM 114 Fundamental Chemistry

  9. Hydrogen and halogen halides HCl, HBr and HI are all strong acids. HF is a weak acid; the H–F bond is so strong, H–F protonates another H–F instead of water, giving H+ + HF2– Also: BrF, BrF3, BrF5 IF decomposes to give I2 + IF5 IF3 decomposes to give IF5 CHEM 114 Fundamental Chemistry IF7

  10. Halogen oxoacids Oxides: Cl2O, Cl2O3 (explosive), ClO2 (quite stable, paramagnetic), Cl2O4, Cl2O5 Cl2O4 is [Cl]+[ClO4]– in the solid. Cl2O6 is [ClO2]+[ClO4]– in the solid, Cl2O6 in the gas. Cl2O7 is anhydrous perchloric acid CHEM 114 Fundamental Chemistry I2O4 is [IO]+[IO3]–, I2O5 , I4O9 is I(IO3)3

  11. Electrode potentials CHEM 114 Fundamental Chemistry

  12. Noble gases CHEM 114 Fundamental Chemistry

  13. Xenon fluorides CHEM 114 Fundamental Chemistry

More Related