H and q

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Funmi Baruwa
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H and q

Postby Funmi Baruwa » Fri Jan 22, 2021 8:34 am

Is heat denoted with q or H? Or is H for heat and q is for enthalpy specifically?

SophiaNguyen_2L
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Re: H and q

Postby SophiaNguyen_2L » Fri Jan 22, 2021 8:57 am

I believe q denotes heat, which is basically a transfer of energy in chemical reactions. On the other hand, H is enthalpy, which is a state property.

Aayushi Jani 3A
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Re: H and q

Postby Aayushi Jani 3A » Fri Jan 22, 2021 6:55 pm

q is the measurement for heat (in joules) and H is for enthalpy. While enthalpy is a state property (not dependent on the path taken to obtain that state), heat is not.

Jiapeng Han 1C
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Re: H and q

Postby Jiapeng Han 1C » Fri Jan 22, 2021 8:19 pm

I think q typically denotes a change in heat energy while H denotes a change in enthalpy.

Jiayi Wu 3J
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Re: H and q

Postby Jiayi Wu 3J » Fri Jan 22, 2021 8:57 pm

q is the heat flow and H is enthalpy.

Inderpal Singh 2L
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Re: H and q

Postby Inderpal Singh 2L » Sat Jan 23, 2021 1:18 am

H is for enthalpy
q is for heat flow

Tanner Bartyczak 1K
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Re: H and q

Postby Tanner Bartyczak 1K » Sat Jan 23, 2021 2:07 am

q is for heat.
H is for enthalpy.

Devin Patel 2D
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Re: H and q

Postby Devin Patel 2D » Sat Jan 23, 2021 10:15 am

q is the denotation for heat (in joules), which is not a state property, and H is the denotation for enthalpy, which is a state property.

Gwirnowski 3B
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Re: H and q

Postby Gwirnowski 3B » Sat Jan 23, 2021 8:34 pm

H is used to denote enthalpy values while q denotes heat

Jason_John_2F
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Re: H and q

Postby Jason_John_2F » Sat Jan 23, 2021 8:44 pm

q is energy transfer while h(enthalpy) is total heat content or state of the system

Ava Nickman
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Re: H and q

Postby Ava Nickman » Sat Jan 23, 2021 8:51 pm

h is enthalpy and q is heat

Madison Muggeo 3H
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Re: H and q

Postby Madison Muggeo 3H » Sat Jan 23, 2021 9:37 pm

Q is just the transfer of heat, while H is the enthalpy of the system.

Ansh Patel 2I
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Re: H and q

Postby Ansh Patel 2I » Sat Jan 23, 2021 10:09 pm

Hi! H represent the enthalpy of a system and q represents heat.

Sofia Lombardo 2C
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Re: H and q

Postby Sofia Lombardo 2C » Sun Jan 24, 2021 8:55 am

H represents enthalpy, while q represents the transfer of heat.

Keon Amirazodi 3H
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Re: H and q

Postby Keon Amirazodi 3H » Sun Jan 24, 2021 1:07 pm

h=heat
q=enthalpy

Shreyank Kadadi 3K
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Re: H and q

Postby Shreyank Kadadi 3K » Sun Jan 24, 2021 4:46 pm

q refers to heat whereas H refers to enthalpy. Enthalpy is known as a state function, meaning that if you knew the state of a reaction (how the reaction was before and after it occurred), the enthalpy can be calculated. On the other hand, heat is not a state function and cannot be calculated from the starting and ending states of a reaction.

josephspindler2H
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Re: H and q

Postby josephspindler2H » Sun Jan 24, 2021 4:49 pm

Q is for heat and H is for enthalpy!

Luveia Pangilinan 1A
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Re: H and q

Postby Luveia Pangilinan 1A » Sun Jan 24, 2021 4:51 pm

H is for enthalpy and is a state property and q is not so it's for heat! Hope this helps :D

Gillian Gabrielsen2F
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Re: H and q

Postby Gillian Gabrielsen2F » Sun Jan 24, 2021 4:54 pm

ΔH is for enthalpy, which is specifically the energy absorbed/released as heat by a system under constant pressure. It's a state function. Heat, q, is not a state function.

Isabella Cortes 2H
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Re: H and q

Postby Isabella Cortes 2H » Sun Jan 24, 2021 4:56 pm

H denotes enthalpy and Q is for heat

David Y
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Re: H and q

Postby David Y » Sun Jan 24, 2021 5:41 pm

delta H is a change in enthalpy

Mingzi Yang 1E
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Re: H and q

Postby Mingzi Yang 1E » Sun Jan 24, 2021 5:55 pm

Heat is denoted with q. H / delta H is for enthalpy.

Justin Zhang_1A
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Re: H and q

Postby Justin Zhang_1A » Sun Jan 24, 2021 5:57 pm

q refers to heat while H is enthalpy.

Ximeng Guo 2K
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Re: H and q

Postby Ximeng Guo 2K » Sun Jan 24, 2021 8:27 pm

H is enthalpy
q is heat energy

Abraham De Luna
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Re: H and q

Postby Abraham De Luna » Sun Jan 24, 2021 10:57 pm

Q is used to denote heat and H is used to denote enthalpy.

John Antowan 1K
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Re: H and q

Postby John Antowan 1K » Sun Jan 24, 2021 10:58 pm

The symbol q is intended to express heat and H is to represent enthalpy is a state function while heat is not.

Funmi Baruwa
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Re: H and q

Postby Funmi Baruwa » Thu Jan 28, 2021 1:27 pm

thank you all!

Xavier Herrera 3H
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Re: H and q

Postby Xavier Herrera 3H » Thu Jan 28, 2021 4:17 pm

q represents the amount of heat released or absorbed in a system in J. Delta H represents the amount of heat released or absorbed AT CONSTANT PRESSURE. So you can think of it like q sub p = deltaH.

Melis Kasaba 2B
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Re: H and q

Postby Melis Kasaba 2B » Thu Jan 28, 2021 4:43 pm

q is heat, while H is used to describe a change in enthalpy. As we discussed in class, enthalpy is a state function, while heat is focused more on heat released/absorbed from a system.

Adam Bustamante 1I
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Re: H and q

Postby Adam Bustamante 1I » Thu Jan 28, 2021 8:36 pm

q is for the heat whereas H is for enthalpy.

Katie Le 3K
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Re: H and q

Postby Katie Le 3K » Fri Jan 29, 2021 2:31 pm

q is heat. h is enthalpy

reyvalui_3g
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Re: H and q

Postby reyvalui_3g » Fri Jan 29, 2021 11:10 pm

Heat is represented by q.

rhettfarmer-3H
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Re: H and q

Postby rhettfarmer-3H » Sun Jan 31, 2021 5:22 pm

Q refers to heat which is not a state property and H is the enthalpy which is a state function.

Sarah Huh 1K
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Re: H and q

Postby Sarah Huh 1K » Sun Jan 31, 2021 7:08 pm

q is heat in joules, while H is enthalpy change.

Faaizah Arshad 1H
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Re: H and q

Postby Faaizah Arshad 1H » Sun Jan 31, 2021 7:11 pm

q is the heat that is transferred to or from a system, and it is not a state function. However, H is the total heat of the system at constant pressure and it is a state function.

Caelin Brenninkmeijer 1G
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Re: H and q

Postby Caelin Brenninkmeijer 1G » Sun Jan 31, 2021 7:14 pm

H is the enthalpy of the system while q is the amount of heat transferred in a system and is used to describe the change in enthalpy.

Keshav Patel 14B 2B
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Re: H and q

Postby Keshav Patel 14B 2B » Sun Jan 31, 2021 7:17 pm

Q represent heat, while H is a state function for enthalpy meaning the change in amount of heat.

MCalcagnie_ 1D
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Re: H and q

Postby MCalcagnie_ 1D » Sun Jan 31, 2021 8:11 pm

I think q represents heat, but its not a state function. H is a state function that represents the net heat of a system at a specific pressure.

Sahaj Patel Lec3DisK
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Re: H and q

Postby Sahaj Patel Lec3DisK » Sun Jan 31, 2021 8:28 pm

"q" denoted heat, while H represents enthalpy. If I am not mistaken, heat (q) of a gas under constant pressure equals the change in Enthalpy (H). Hope this helps!

Kiana Tashakori 1D
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Re: H and q

Postby Kiana Tashakori 1D » Sun Jan 31, 2021 8:41 pm

heat is denoted by q, and enthalpy is denoted by h

Presley Gao 2C
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Re: H and q

Postby Presley Gao 2C » Sun Jan 31, 2021 9:15 pm

Heat is denoted with q and enthalpy is denoted with H, specifically.

Carly_Lipschitz_3H
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Re: H and q

Postby Carly_Lipschitz_3H » Sun Feb 07, 2021 3:34 pm

Q represents heat/energy but is not a state function. H is representative of enthalpy and is a state function.

Mina Tadros 3L
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Re: H and q

Postby Mina Tadros 3L » Sun Feb 07, 2021 3:39 pm

Heat, which is not a state function, is denoted by q, while enthalpy, which is a change in heat at constant pressure, is a state function, and thus, it is denoted by delta H.

Lizbeth Garcia 1F
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Re: H and q

Postby Lizbeth Garcia 1F » Sun Feb 07, 2021 3:55 pm

I believe q can also be used for enthalpy if it is qp or heat absorbed/released at constant pressure.

Charisma Arreola 2F
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Re: H and q

Postby Charisma Arreola 2F » Sun Feb 07, 2021 4:06 pm

Q denotes heat and H is enthalpy.

Kyla Roche 2K
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Re: H and q

Postby Kyla Roche 2K » Sun Feb 07, 2021 4:07 pm

H is for enthalpy and q is for heat but when q is under constant pressure, q=h. This is because enthalpy relates to heat under the terms of constant pressure.

Navdha Sharma 3J
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Re: H and q

Postby Navdha Sharma 3J » Sun Feb 07, 2021 4:11 pm

Q --> heat
H --> enthalpy

Zainab Jamali 1H
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Re: H and q

Postby Zainab Jamali 1H » Sun Feb 07, 2021 4:33 pm

q is the measurement of heat (transfer of heat energy) and H is the measurement of enthalpy! Enthalpy is a state function but heat is not. If the system in question is at constant pressure, then I believe delta H is equal to q.


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