PS 13 2020 - PS 13 PDF

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Problem(Set(13(–(Lewis(Structures! Chem!105! 1. (a) Draw Lewis symbols for atoms of nitrogen, selenium, and chlorine. (b) Draw Lewis symbols of the most stable ions formed by lithium, magnesium, aluminum, and fluorine. (c) How many valence electrons are in each of these atoms of ions? Xe, Sr2+, Cl, Cl2. (a) How many valence electrons does each of the following species contain? N2+, CS+, CN, CO (b) Draw Lewis structures for the following diatomic molecules and ions: F2, NO+, SO, HI 3. For each of the following molecules or ions, indicate the total number of valence electrons present and draw the Lewis structure. Then indicate the number of lone pairs, bonding electrons, single bonds, double bonds, and triple bonds that are present. a) water f) ammonia (NH3) b) methane (CH4) g) ammonium ion c) nitrogen trichloride h) chlorite ion d) sulfur difluoride i) acetate ion e) hydrogen cyanide j) CO 4. How many bonding electrons are in 630 mg of phosphorus pentafluoride? 5. Chlorofluorocarbons (CFCs) are compounds linked to depletion of stratospheric ozone. They are also greenhouse gases. Draw Lewis structures for the following CFCs: a) CCl3F (Freon 11) b) CCl2F2 (Freon 12) c) CClF3 (Freon 13) d) Cl2FC—CClF2 (Freon 113) e) ClF2C—CClF2 (Freon 114) 6. Formic acid, HCOOH, is the smallest organic acid and was originally isolated by distilling red ants. Draw its Lewis structure given the connectivity of the atoms shown to the right. 7. Labels on household cleaners caution against mixing bleach with ammonia because they react to produce monochloramine (NH2Cl) and hydrazine (N2H4), both of which are toxic. Draw the Lewis structures for monochloramine and hydrazine. 8. Draw a Lewis structure for phosgene,COCl2, a poisonous gas used in chemical warfare during WWI....