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A:
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A:
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Q: 15.What would be the pH of a 0.25 M solution of phenylamine (C6H5NH2) at room temperature? The Kb of…
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Q: At what pH is a reductive amination reaction performed? O 5 6. O 7
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Q: Preparation approximately 0.1N of Hcl 250ml
A: We have to Prepare approximately 0.1 N Of HCl 250 ml Here 0.1 N HCl is considered as 0.1 M HCl
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- Disulfides are compounds that have S¬ S bonds, like peroxides have O¬ O bonds. Thiols are organic compounds that have the general formula R¬ SH, where R is a generic hydrocarbon. The SH- ion is the sulfur counterpart of hydroxide, OH-. Two thiols can react to make a disulfide, R¬ S¬ S¬ R. If you wanted to convert a disulfide to two thiols, should you add a reducing agent or oxidizing agent to the solution?2- The spectral characteristics of phenols and aromatic amines change with the change of pH of the solution?Dicarboxylic acids have two dissociation constants, one for the initial dissociation into a rnonoanion and one for the second dissociation into a dianion . For oxalic acid, HO,C-CO,H, the first ionization constant has pKaj = 1.2 and the second ionization constant has pKaz = 4.2. Why is the second carboxyl group so much less acidic than the first?
- least acidic I < || < III most acidic least acidic II < I < III most acidic least acidic III < || < I most acidic least acidic III < | < || most acidicCalculate the pH of a 0.0015 M solution of C6H5NH2 (Kb for C6H5NH2 = 3.80 ⨉ 10-10).What is the pH of an aqueous solution containing 0.50 mol L–1 ethanoic acid, 0.30 mol L–1 sodium ethanoate, and 0.10 mol L–1 HCl? [The pKa of ethanoic acid is 4.75.]
- Write the chemical formula for diarsenic trioxide 14- 3+ 4+ 1 4 9. (s) (1) (g) (aq) As An Ar Ox Reset • x H2O Delete 3, 2.If the pH value of an aqueous solution of trimethylamine [(CH3)3N] is 10.75, what should the molarity of this solution be? (CH3)3N + H2O ↔ (CH3)3NH+ + OH-, Kb = 6,3 × 10-5(b) Calculate the pH of 0.0005 mol dm-3 ethanois acid when its pKa = 4.75 CH;COOH() -> CH;COO (a H(a + Ka = pH =
- The value of K, for ethylamine, C,H;NH, is 4.30×104. Write the equation for the reaction that goes with this equilibrium constant. + It is not necessary to include states such as (ag) or (1). +F3C - T SOH Br3C III Rank the compounds (shown below) in order of increasing acidity. H3C ОН II ОН A) | < ||| < || B) ||| < || < | C) || < III < | D) ||| < | < || E) II < I < |||3. For the following acid - base reaction, (a) predict the products; (b) identify the Bronsted acid, Bronsted base, conjugate acid, and conjugate base; (c) use curved arrows to show the flow of electron pairs in the reaction. CH3 CH2C-OH + NaNHa