Vicinal dihalides can be converted to alkynes by treatment with alcoholic KOH followed by sodamide. What is the role of sodamide (NaNH2) in this two-step process?

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It eliminates the second molecule of hydrogen halide to form the alkyne.

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Vicinal dihalides can be converted to alkynes by treatment with alcoholic KOH followed by sodamide. What is the role of sodamide (NaNH2) in this two-step process?

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