kind of depends on the reaction. ex. solid and a liquid react causing a an aqueous solution and a gas to form. when a gas is formed the gas expands causing it to do work on its surroundings causing work to be negative.
A reaction that releases energy is exothermic.
endothermic reaction a positive enthalpy.
In an exothermic reaction, heat will appear as a product in the chemical equation. It is denoted on the product side of the equation with a positive sign, indicating that heat is being released from the reaction.
EXTREMELY!!!!! exothermic. As in fires and explosions exothermic.
An exothermic reaction is one that proceeds with the evolution of heat.
Guys watch out the question, if your question end with positive then the answer will be An endothermic reaction that decreases in entropy. If the question end with negative then its An exothermic reaction that increases in entropy--APEX hope this help
Any reaction categories into exothermic and endothermic based upon change in enthalpy of reaction. If difference in enthalpy of product and reactant comes positive value then it is termed as endothermic and if it is negative value then exothermic reaction. Usually, vaporisation is considered as exothermic due to release in energy.
A reaction that releases energy is exothermic.
The reaction is exothermic, meaning it releases heat. The enthalpy of the reaction is negative, indicating that it is exothermic.
endothermic reaction a positive enthalpy.
Heat is released during an exothermic reaction.
In thermometric titration the reaction enthalpy is used to follow the chemical reaction. I guess it dépends on the titration reaction it can be exothermic or endothermic. ΔHr (molar heat of reaction) negative (indicating an exothermic reaction) or positive (indicating an endothermic reaction
exothermic reaction .
An exothermic reaction releases energy in the form of heat. This type of reaction typically results in a rise in temperature in the surrounding environment. Examples include combustion and neutralization reactions.
In an exothermic reaction, heat will appear as a product in the chemical equation. It is denoted on the product side of the equation with a positive sign, indicating that heat is being released from the reaction.
Exothermic reaction: reaction with release of heat; for example burning of organic materials (oxydation of carbon) is a typical exothermic reaction.
Exothermic reactions