4) Write a stepwise mechanism for the following reactions showing ALL intermediates. Use curved arrows to symbolize the flow of electrons to show how each of the intermediates and product are formed. Show all necessary lone pairs and formal charges. а) -Br NaF + NaBr b) H20 + Hао + НО CI

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Q: OH OH Phph Ph CrO3 H₂SO4 SOCI₂ een H HN(CH,CH3)2

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Alkynes

Alkynes are organic compounds that contain at least one triple bond between carbon-carbon atoms. They are a series of unsaturated compounds with a general molecular formula, CnH2n-2.