delta H vs q

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Dhwani Krishnan 1G
Posts: 63
Joined: Fri Sep 28, 2018 12:17 am

delta H vs q

Postby Dhwani Krishnan 1G » Sat Feb 02, 2019 9:25 pm

What is the difference between and q? How are they related?

katherinemurk 2B
Posts: 68
Joined: Wed Nov 15, 2017 3:02 am

Re: delta H vs q

Postby katherinemurk 2B » Sat Feb 02, 2019 9:28 pm

delta H is change in enthalpy and q is heat added to the system

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

Re: delta H vs q

Postby Harshita Talkad 4L » Sat Feb 02, 2019 9:59 pm

Delta H is the change in enthalpy, while q is just heat, so it doesn't represent a change.

Hadji Yono-Cruz 2L
Posts: 64
Joined: Fri Sep 28, 2018 12:26 am

Re: delta H vs q

Postby Hadji Yono-Cruz 2L » Sat Feb 02, 2019 10:12 pm

Delta H is the change in enthalpy and q represents heat.

Alexandra Albers 1D
Posts: 61
Joined: Fri Sep 28, 2018 12:18 am

Re: delta H vs q

Postby Alexandra Albers 1D » Sat Feb 02, 2019 10:16 pm

In some cases, such as that of delta U, particularly in biological reactions, qp and delta H can be equal because the there is not work due to expansion, meaning that delta U=delta H.

AngelaZ 1J
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Joined: Fri Sep 28, 2018 12:23 am

Re: delta H vs q

Postby AngelaZ 1J » Sun Feb 03, 2019 3:06 pm

Change in enthalpy (delta H) is the amount of heat (q) absorbed or released at constant pressure.

Rami_Z_AbuQubo_2K
Posts: 89
Joined: Thu Jun 07, 2018 3:00 am

Re: delta H vs q

Postby Rami_Z_AbuQubo_2K » Sun Feb 03, 2019 7:32 pm

When pressure is constant, q becomes qp and this is equal to .

George Ghaly 2L
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Re: delta H vs q

Postby George Ghaly 2L » Sun Feb 03, 2019 8:56 pm

Delta H represent the heat that changed in reaction, while q represents the heat.

MadelineHlobik
Posts: 33
Joined: Fri Sep 28, 2018 12:22 am

Re: delta H vs q

Postby MadelineHlobik » Sun Feb 03, 2019 9:41 pm

How exactly do you solve for delta H?

Kathryn 1F
Posts: 66
Joined: Fri Sep 28, 2018 12:19 am

Re: delta H vs q

Postby Kathryn 1F » Sun Feb 03, 2019 9:50 pm

Rami_Z_AbuQubo_2K wrote:When pressure is constant, q becomes qp and this is equal to .


Why is this? How does keeping the pressure constant equal to enthalpy? Thanks!


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