1)2CH3-C=-CH+2Na=2CH3-C=-CNa+H2
2)CH3-C=-CNa+CH3Cl=CH3-C=-C-CH3+NaCl
3)CH3-C=-C-CH3+HOH=CH3-CH2-CO-CH3.
ОТВЕТ:БУТАНОН(МЕТИЛЭТИЛКЕТОН).
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