Which of the following is an exothermic react | vedclass

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Question

(D) An exothermic reaction is a process that releases energy,characterized by a negative change in internal energy $(\Delta U < 0)$ or enthalpy $(\Del

Vedclass · Accepted Answer

$C_2H_{2(g)} + 2H_{2(g)} \rightarrow C_2H_{6(g)} ; \Delta U = -314 \, kJ$

Vedclass · Answer

(D) An exothermic reaction is a process that releases energy,characterized by a negative change in internal energy $(\Delta U In option $A$,$180 \, kJ$ is added to the reactants,indicating an endothermic process.In option $B$,the negative sign on the product side indicates energy is absorbed,making it endothermic.In option $C$,$\Delta U = +181 \, kJ$ indicates a positive value,meaning energy is absorbed (endothermic).In option $D$,$\Delta U = -314 \, kJ$ indicates a negative value,meaning energy is released,which characterizes an exothermic reaction.

Which of the following is an exothermic reaction?

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