The reaction products are potassium carbonate and ethane (a hydrocarbon belonging to the homologous series of alkanes).
Such products are formed as a result of the fusion of solid potassium hydroxide and potassium propionate (propinic acid salt) – the Dumas reaction.
CH3 – CH2 – COOK (s) + KOH (s) = K2CO3 + CH3 – CH3.
Answer: KOH and CH3 – CH2 – COOK (potassium propionate).
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