Created by StemPy LabSix statements about the acidic character of hydrocarbons are given below. (i) The acidic character falls as . (ii) Ethyne reacts with sodium metal and gives monosodium ethynide and dihydrogen. (iii) All four hydrogen atoms of propyne, , are acidic. (iv) But-2-yne reacts with sodamide and gives ammonia. (v) An carbon, with s character, is more electronegative than an or carbon. (vi) Ethene is more acidic than ethyne, because its bond is weaker. How many of the statements above are correct?
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← Four alkenes are warmed separately with acidic KMnO₄, which breaks the double bond. A chemist uses such products to find where the double bond sits in an unknown alkene. Match each alkene with its products. List-I (Alkene) A. But-1-ene B. But-2-ene C. 2-Methylpropene D. 2-Methylbut-2-ene List-II (Products) I. (CH₃)₂CO and CH₃COOH II. CH₃COOH only III. CH₃CH₂COOH and CO₂ IV. (CH₃)₂CO and CO₂Assertion (A): In the laboratory, but-1-yne and but-2-yne are warmed in separate flasks with water, dilute H₂SO₄ and HgSO₄ at 333 K. In each flask the enol formed first changes into a carbonyl compound, and both flasks end with the same carbonyl compound. Reason (R): Both but-1-yne, CH₃CH₂C≡CH, and but-2-yne, CH₃C≡CCH₃, carry a hydrogen atom on a triply bonded carbon, so water adds to both by the same route. →
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