ENTHD2
Description:
Enthalpy change, denoted as ΔH, represents the energy change that occurs during a chemical reaction or physical process. It measures the amount of heat absorbed or released by the system as the reaction proceeds. The enthalpy change can be positive (endothermic) or negative (exothermic), depending on whether the reaction absorbs or releases heat.
Associated Diseases:
Enthalpy changes play a critical role in various physiological and pathological processes. Some diseases associated with abnormal enthalpy changes include:
- Hyperthyroidism: An overactive thyroid gland releases excessive thyroid hormones, leading to an increase in metabolic rate and a negative enthalpy change.
- Hypothyroidism: An underactive thyroid gland produces insufficient thyroid hormones, resulting in a decrease in metabolic rate and a positive enthalpy change.
- Fever: A rise in body temperature during an infection is associated with an increase in enthalpy change as the body fights off pathogens.
- Inflammation: Inflammatory reactions involve the release of heat and pro-inflammatory cytokines, leading to a positive enthalpy change.
Did you Know ?
According to the American Chemical Society, the standard enthalpy change of formation of water (ΔH°f) is -285.8 kJ/mol. This negative value indicates that the formation of water from hydrogen and oxygen releases heat.
