Which row gives the description of an exothermic reaction?
- Asign of enthalpy change $\Delta H$ is positive; temperature of the surroundings decreases
- Bsign of enthalpy change $\Delta H$ is positive; temperature of the surroundings increases
- Csign of enthalpy change $\Delta H$ is negative; temperature of the surroundings decreases
- Dsign of enthalpy change $\Delta H$ is negative; temperature of the surroundings increases