Temperature

[Sophia Dinh 1D]

Is a negative delta H exothermic or endothermic?

[Jason Wu 1E]

A Negative Delta H is an exothermic reaction where heat leaves the system and enters the surroundings.

[805394719]

Since delta H is equal to the energy of products - reactants, if delta H is positive, the energy of the products will be larger than the energy of the reactants meaning that there is an input of energy and the reaction is endothermic. If the energy of the reactants is greater than the energy of the products, energy is given off and thus the reaction is exothermic.

[Sukanya Mohapatra 2G]

A negative delta H would be exothermic.

[KSong_1J]

A negative delta H is exothermic because when energy leaves a constant pressure system as heat, the enthalpy of the system decreases by that amount.

[Charysa Santos 4G]

A negative delta H is exothermic because that means that energy is leaving (-) the system.

[Samuel Tzeng 1B]

Exothermic

[J_CHEN 4I]

Since deltaH = H_final - H_initial and if the reaction is exothermic (heat is released into the surroundings), then H_final < H_initial (e.g. 3 kJ/mol - 4 kj/mol = -1 kJ/mol) which would yield a negative deltaH.

[RasikaObla_4I]

A negative delta H is exothermic because energy is released.

[KHowe_1D]

A negative delta H is exothermic because heat is being released into the surrounding environment.

[Nathan Rothschild_2D]

Delta H being negative means that the reaction is giving off energy and is therefor exothermic.

[Juana Abana 1G]

A negative delta H is exothermic since energy is being released.

[Sean Tran 2K]

Negative delta H shows a release of energy, being exothermic

[005162902]

The negative in front of delta H indicates an exothermic reaction. This is because the reaction is releasing/losing heat, hence the negative sign in front of the change in enthalpy (H).

[Hannah Romeo 1J]

A negative delta H is exothermic as energy is released because the reactants have a higher amount of energy in comparison to the products. This results in the reaction releasing energy as the products are in a lower energy and more stable state.