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q=H

Posted: Sun Feb 09, 2020 10:17 pm
by saigorijavolu2k
When does deltaH = q. I remember hearing that q always deltaH, but the reverse is not true? I am unsure if I heard correctly and why this is so/

Re: q=H

Posted: Sun Feb 09, 2020 10:44 pm
by Ashley Wang 4G
q = ∆H(rxn) if the reaction occurs under conditions of constant pressure, just by the definition of enthalpy change (the heat absorbed/released in a reaction at constant pressure).

Re: q=H

Posted: Sun Feb 09, 2020 10:54 pm
by Nathan Rothschild_2D
I believe you have it switched. deltaH is always q, while q is = to deltaH at constant pressure

Re: q=H

Posted: Sun Feb 09, 2020 11:56 pm
by 005162520
I know that q is not always delta H, but it can if it is at constant pressure. But why is delta H always q?

Re: q=H

Posted: Sun Mar 15, 2020 7:19 am
by Alan Cornejo 1a
Delta H is equal to q when no work is done onto a system, such as a constant pressure