Delta H

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Briana Yik 1H
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Delta H

Postby Briana Yik 1H » Thu Jan 24, 2019 11:37 pm

When Delta H is positive, does it mean the reaction is endothermic or exothermic? Thank you

Sydney To 1D
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Re: Delta H

Postby Sydney To 1D » Thu Jan 24, 2019 11:50 pm

When delta H is positive, the positive sign indicates that the reaction is endothermic, meaning that it requires heat.

Chase Yonamine 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Re: Delta H

Postby Chase Yonamine 1J » Fri Jan 25, 2019 10:22 am

To add, when delta H is positive that means that there is more enthalpy (heat) in the products than in the reactants. This means that heat is required to be added into the reaction to produce the products.

Harshita Talkad 4L
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: Delta H

Postby Harshita Talkad 4L » Sat Jan 26, 2019 1:35 am

The reaction is endothermic, since a positive value of delta H means that the heat of the products is greater than the heat of the reactants, which means the reaction required the absorption of heat.

taryn_baldus2E
Posts: 62
Joined: Fri Sep 28, 2018 12:24 am

Re: Delta H

Postby taryn_baldus2E » Sat Jan 26, 2019 9:09 am

When delta H is positive the reaction is endothermic. To understand this you should think of this as determining the amount of heat that is still in the reaction. Since an endothermic reaction absorbs heat, it would make sense that its change in heat would increase. On the other hand, when the reaction releases heat in an exothermic reaction or loses heat, it would make sense that the change in heat would be negative.


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