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- Calculate the Ka's for the following acids: (a) Citric acid, pKa = 3.14 (b) Tartaric acid, pKa = 2.98One of the steps in fat metabolism is the hydration of crotonate to yield 3-hydroxybutyrate. This reaction occurs by addition of —OH to the Si face at C3, followed by protonation at C2, also from the Si face. Draw the product of the reaction, showing the stereochemistry of each step.How is SO3 more acidic than MgO? SO3 + H2O = H2SO4 so it can give two (H+) but MgO + H2O = Mg(OH)2, wouldn't it therefore also be able to give 2 (H+) making it just as acidic as SO3? can someone explain?
- If a diprotic acid, H2A, has a pK1 = 2.20 and pK2 = 9.31, what is the principal species of this compound at pH = 5.13? O H2A O A2- OHA O H3A+(2) Caffeine (C8H10N4O2) is a weak base with a pKь of 10.4. Calculate the pH of a solution containing a caffeine concentration of 455 mg/L.What is the pKa value of molecule C? OH soni +
- What is the classification of the reaction shown in the equation below? BaCl2 + MgSO4 -> BaSO4 + MgCl2(a) Given that Kb for ammonia is 1.8 x10-5 and that forhydroxylamine is 1.1 x 10-8, which is the stronger base?(b) Which is the stronger acid, the ammonium ion or thehydroxylammonium ion? (c) Calculate Ka values for NH4+and H3NOH+.What is the dominant form of arsenic acid (H3A) at pH =9.23 ? Given: pKa1 = 2.24 , pKa2 = 6.96, pKa3 = 11.5
- Why is K2CO3 a good choice for deprotonation of benzoic acid? Which way does the equilibrium lie, and by how much? How would you determine the direction of the equilibrium without knowing the pka value? ThanksWhich of the following reactions favor formation of the products? (For the pKa values necessary to solve this problem, see Appendix I. Recall that the equilibrium favors formation of the weaker acid4. Calculate pH of water solution of Hydrosulphuric acid with concentration of 0,050 M (pKa=6.99)