| 31. | Scandium triflate is used as a reagent in organic chemistry as a Lewis acid.
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| 32. | Without the Lewis acid, only the 14-membered dimer ring was observed.
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| 33. | This phenomenon gives rise to the wide field of Lewis acid-base chemistry.
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| 34. | Lewis acid activation is essential for complete reaction.
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| 35. | In common with the other tetrahalides, TiF 4 is a strong Lewis acid.
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| 36. | The mechanisms are difficult to distinguish because many Lewis acids can behave as oxidants.
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| 37. | Zinc chloride is a mild lewis acid with a solution pH of about 4.
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| 38. | If an oxidizing agent gains electrons, does that make it a Lewis Acid?
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| 39. | Curium ions are hard Lewis acids and thus form most stable complexes with hard bases.
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| 40. | The pentachloride and pentafluoride are Lewis acids.
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