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- Ex: Calculate the Equivalent weight for Compounds below. أسئلة: أحسب الوزن المكافي ل لمركبات الاتية HCI – H,SO, – NAOH – Fe(OH)2 – Fe(OH)3 – NH,OH – K;CrO,- NaF – H;PO4 ZnCl2 – MgSO, - AGNO3 – Pb(OH)2 – CH;COOH – Na,CO3 – Hg2(NO3)2 – HIBalance the following redox reactions, to their simplest form, by supplying the correct coefficients before each compound for #s 1-15. The unknown coefficients of the compounds should be whole numbers. Note: The reactions below are not yet balanced.(b) Calculate the pH of 0.0005 mol dm3 ethanoic acid when its pKa = 4.75 CH3COOH( CH3COO() + H™ Ka = pH =
- Structure pK, K. Name NH; CHCH,-O 2.20 (СО,Н) 9.31 (NH,) 6.3 X 10-3 4.9 x 10-10 Phenylalanine CO,H 7.11 x 10-3 6.34 x 10-8 2.148 * 7.198 Phosphoric acid* (hydrogen phosphate) НО — Р— Он 12.375 4.22 X 10-13 OH (1.5) 6.78 3 x 10-2 1.66 x 10-7 HP- он Phosphorous acid (hydrogen phosphite) OH 1.12 x 10-3 3.90 x 10-6 2.950 Phthalic acid (benzene-1,2-dicarboxylic acid) 5.408 cO,H Piperazine (perhydro- 1,4-diazine) 5.333 9.731 4.65 x 10-6 1.86 X 10-10 11.125 7.50 x 10-12 Piperidine 1.12 x 10-2 2.29 x 10-11 -co,H 1.952 (СO,Н) 10.640 (NH,) Prolinc +H 4.874 1.34 x 10-5 Propanoic acid CH,CH,CO,H H,C=CHCO,H 4.258 5.52 x 10-5 Propenoic acid (аcrylic acid) 10.566 2.72 x 10-11 Propylamine CH;CH,CH,NII; 5.20 6.3,X 10-6 Pyridine (azine) Pyridine-2-carboxylic acid (picolinic acid) (1.01) (CO,H) 5.39 (NH) 9.8 x 10-2 4.1 x 10-6 co,H HO,C Pyridine-3-carboxylic acid (nicotinic acid) 2.03 (CO,H) 4.82 (NH) 9.3 x 10-3 1.51 x 10-s NH+ 1.4 (POH) (u = 0.1) 3.44 (OH) (1p. = 0.1) 6.01 (POH) (u = 0.1) 8.45 (NH) (u =…HO. [1] LIAIH, C. N. [2] H20 HO. [1] LIAIH(OC(CH3)3ala d. [2] H2O(k) (1) Me. an allene CH₂ CO₂Me Ph N₂ a. TsN 3, DBU b. Rh₂(OAC)4 CO₂Me Rh₂(OAC)4
- Acetylene is a very weak acid; however, it will react with moist silver(I) oxide and form water and a compound composed of silver and carbon. Addition of a solution of HCl to a 0.2352-g sample of the compound of silver and carbon produced acetylene and 0.2822 g of AgCl. (a) What is the empirical formula of the compound of silver and carbon? (b) The production of acetylene on addition of HCl to the compound of silver and carbon suggests that the carbon is present as the acetylide ion, C22-. Write the formula of the compound showing the acetyl ide ion.4 Complete the figure below G A H Jones H₂ Pd-BaSO4 Ph3P=CHCOOCH3 F H B SOCI₂ DCC CN OH COOH C E COOH OH COOH1. NaNH2: 2. CH;CH,CHO; 3. H*(quenching): 4. H/Pd/BaSO,/pyridine; 5. OsO,/H,O2 H =H он он он он но HO HO он он но но OH E
- Did you first add the H2O(l) on the right side of the equaton and then added the 2HO- on the left side and multiplied CIO2 on the left side by 2?4. Draw structures for products of the following reactions. PaCl, (Bu water tBu PdCI, methanol OH CHCI, NaOH, water Me,N LDA, THE, 0°C BulI (2 moles) Bri THF, -78°C Buli THE, °C Br Pd(OAch THE, 0C MeOIf the pH is 2, what is the %HA at of a molecule has a pka = 4? Report the answer to one dpcimal place. Your Answer: Answer units