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- 3- 1. excess LiAlH4 2. H₂O1) 2) 1 •NH₂ 0 H 1. SOCL₂, pyr 2. It 3C ~ Mg Br Hz 3.H30+ + ∙H n. ? NaOH ?Page < 2 of 2 ZOOM + 7. Write balanced chemical eqess | esc | to exitTO Screen ctions. a. production of ammonia, NH3(g), by combining N2(g) and H2(g) b. production of methanol, CH3OH(1), by combining H2(g) and CO(g) c. production of sulfuric acid by combining sulfur, oxygen, and water 8. Diborane and related compounds were proposed as rocket fuels in the 1950s. A representative reaction for this class of molecules is that of B2H6 and O2 to form B2O3 and H2O. Write the balanced chemical equation for this process. 9. Silicon nitride, Si3N4, is used as a reinforcing fiber in construction materials. It can be synthesized from silicon tetrachloride and ammonia. The other product is ammonium chloride. Write the balanced chemical reaction for this process. 10. Classify the following compounds as electrolytes or nonelectrolytes: a. potassium chloride, KCl b. hydrogen peroxide, H2O2 c. methane, CH4 d. barium nitrate, Ba(NO3)2
- 2. Strychnine (6) is a notorious poison for both humans and rats. The first synthesis of this molecule was achieved by R. B. Woodward over sixty years ago (JACS 1954, 76, 4749-4751). In the last step of Woodward's synthesis, compound 1 was converted into 6 via intermediates 2-5, as shown. a) Draw all curved arrows that show the entire transformation of 1 into 6, and identify the entire sequence of arrow-pushing patterns. You may draw directly on the structures provided. b) For the step in which 4 is transformed into 5, identify the nucleophilic center and the electrophilic center. This step involves the creation of a new chirality center. Determine its configuration and explain why this reaction is enantiospecific (why the other possible configuration is not observed). N. 1 H H. O. ווח .ווי1י3 CF3 IZ H .N. & O 1. , H3O+ 2. NaOH, H₂O trifluoroperoxyacetic acid 3. 1. NH2NH2, NaOH, H2O, heat 2. KMnO4, NaOH, A 3. H3O*3. Place the following list of compounds into as many categories (boxes) as appropriate. It's probably easier to go substance-by- substance instead of category-by-category (e.g. take NaCH3COO and place it into as many categories as possible). NaCH;COO, HNO3, PBB12, CH,CH2OH, AgNO3, CH;COOH, Fe(NO;)3, C,H1206, KOH, Zn(OH)2, H2S, CACO3, (NH4);PO4, Li;PO4, H2CO3, H2SO4, HCOOH, CSOH, NH3, Na2SO4 Strong acids: Strong electrolytes: Weak acids: Weak electrolytes: Nonelectrolytes: Strong bases: Insoluble:
- OH Z ZI 1. PCC 2. H+ NH, B ZI ZI ?· Draw the molecules on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates toolbars. DOCO [1] A + NaOH Il rights rocorvod Heat H 2D EXP. EXP. CONT. ? Marvin JS by ChemAxon Torms of Use | Privacy Policy | Dormiccions H C N O S CI Br I P F Contact c7. A natural gas sample was analyzed to contain 84% (by volume) CH4, 10% C2H6, 3% C3H8, and 3% N₂. If a series of catalytic reactions could be used for converting all the carbon atoms into butadiene, C4H6, with 100% efficiency, how much butadiene could be prepared from 100 g of the natural gas? Note: Volume percent of a gas mixture is nn mala normant the O 1530 g 82 g O 28 g 3150 g
- 9. Homework • Unanswered HCl(ag) +_N22CO3(aq) → Identify the spectator ions. NaCl(ag) + _CO2(8) + _H2O(1) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Nat andH+ a b Nat and CO Natand Cl- d co?-and Cl-12 AA EE AaBbCcD AaBbCcD AaBbCc AaBbCcf A x' Aa T Normal T No Spac... Heading 1 Heading 2 Paragraph Styl 3 1. 4. B. Fill in the missing reactant or reagent or product to bring about the following chemical reactions. CH, CH, HC 1. CH NaH OH H.C CH;CH21 2. CH, H,O CH, H,SO, H;C Na SH CH,CH,CH,SH CH, CH, H.C CH, CH, pines) 3. 4. 5.Request They Both Die at t... ula Enchanted Wa... Question 6 of 20 Balance the following chemical equation (if necessary): Sio,(s) + C(s) → Si(s) + CO(g) 04- 2. 3+ O4+ 1 6. 7 8. 9. Os 6. O9 (s) (1) (g) (aq) C Si Reset • x HO Delete MacBook Air 000 F3 F4 F5 @ %23 2$ % 2 3 5 6. 8 9. W E 5 4- 3. 2. 14