What is the correct IUPAC name for W(C,H¸O,),? (1) (11) (1II) ) (IV) hexa- penta- mono- octa- tetra- tri- ) hepta- di- oxygen oxalate tungsten formate carbon hydrogen acetate oxide hydride hydrate acid Delete
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- Compound K, L and M are three isomers with the molecular formula C5H10O.Compound K cannot be oxidized, while compound M and L can be oxidized.Oxidation of compound L with hot acidified potassium permanganate,KMnO4 solution yields 2-methylbutanoic acid. When treated with Iodoformreagent, yellow precipitation only occurs in compound K. Fehling test onlyyielded positive results for compound L and negative for compound M andK. Compound M is then reacted with hydrogen chloride, HCl produceschlorocyclopentane (i) Draw the structural formula of compounds K, L and M.Compound K, L and M are three isomers with the molecular formula C5H10O.Compound K cannot be oxidized, while compound M and L can be oxidized.Oxidation of compound L with hot acidified potassium permanganate,KMnO4 solution yields 2-methylbutanoic acid. When treated with Iodoformreagent, yellow precipitation only occurs in compound K. Fehling test onlyyielded positive results for compound L and negative for compound M andK. Compound M is then reacted with hydrogen chloride, HCl produceschlorocyclopentane. (ii) Name the type of chemical reaction of compound M when reacted withhydrogen chloride, HCl .An unkown solvent has a formula of C4H8O and molecular weight of 72.11 g/mol. Determine the ff: a.) index of hydrohgen deficiency b.) all possible functional group present base on IHD
- Which compound would be more basic or weaker, a compound with a pka of -3.5 or a compound with a pja of -1.7Compound X is insoluble in cold KMnO4, Br2 in CCl4, and conc. H2SO4. Compound X is most likely: a. an alkane b. none of these c. an alkene d. an alcohol e. an alkyl halide Indicate which of the ff. statements regarding nucleophilicity is incorrect. F- is more nucleophilic, hence, more reactive towards methyl iodide than Cl-. Second row elements are more nucleophilic than first row elements of comparable basicity. The rate of SN2 reaction may be markedly affected by the nucleophilicity of the attacking atom. Nucleophilicity is the affinity of a nucleophile to an electrophilic carbon Which of the following alkynes can be deprotonated by NaNH2 in liquid NH3? 3-Methylhex-2-yne Pent-2-yne 3-Methylbutyne none of these Hex-3-yne(i) Arrange the following compounds in an increasing order of basic strength :C6H5NH2, C6H5N(CH3)2, (C2H5)2NH and CH3NH2(ii) Arrange the following compounds in a decreasing order of pKb values :C2H5NH2, C6H5NHCH3, (C2H5)2NH and C6H5NH
- Compounds Mass 3-nitrophthalic acid used 200 mg = 0.2g 8% aqueous hydrazine used 0.4mL 3-nitrophthalhydrazide obtained 130 mg = 0.13 g sodium hydrosulfite dihydrate 0.6 g luminol obtained 70 mg = 0.07 g compute yield for nitrophthalhydrazide in the first step (assume nitrophthalic acid is limiting reagent) compute yield for luminol in the second step (using nitrophthalhydrazide as limiting reagent) compute yield for the overall reactionWhat is a glysodic bond 1,4 mean and 1,6Compound 1 is an anticoagulant that is extracted from, among other plants, the sweetclover plant, Melilotus Officinalis. However, the compound is moderately toxic and alsofinds use as a rodenticide. Name this compound
- In the following cases rearrange the compounds as directed : (Delhi 2010)(i) In an increasing order of basic strength :C6H5NH2, C6H5 N(CH3)2, (C2H5)2NH and CH3NH2(ii) In a decreasing order of basic strength :Aniline, p-nitroaniline and p-toluidine(iii) In an increasing order of pKb values :C2H5NH2, C6H5 NHCH3, (C2H5)2NH and C6H5NH2Experimental observations show that thiocyanate (SCN- ), the conjugate base of thiocyanic acid (pKa = 1.1 at 25 °C), is quite soluble in neutral water at pH > 2. In the space provided below, explain this experimental observation. That is, why does SCN– readily dissolve in water when the pH > 2?The ionization of monoprotic organic acid with a Ka of 6.7 × 10 -4 is 3.5%.Calculate the molecular weight of this monoprotic organic acid if 100 g of it is dissolved in 1 L of water. Hence, suggest and draw ONE (1) possible chemical structure of monoprotic organic acid having the calculated molecular weight.