Consider the following reaction: NaHCO3 + HC2H3O2 → NaC2H3O2 + H2O + CO2 The container in which the reaction takes place gets cooler as the acetic acid and sodium hydrogen carbonate mix; is this an endothermic or exothermic reaction and will the heat of reaction be + or -?

Rethink and reinvent

Ithink that’s it’s b

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.