H and q

[Abigail Sanders 1E]

How are delta H and q different in terms of heat? In the homework questions these variables are used interchangeably, is there a way to distinguish when you use one or the other and what does each mean?

[Connie Chen 1E]

Delta H refers to the total heat in a system whereas q is the heat that is being transferred. Delta H is equal to q when the pressure is constant, but if the pressure changes, then they are not the same.

[Ryan Yoon 1L]

delta h is the amount of heat released or absorbed at a constant pressure, which is also enthalpy. whereas q is the heat being transferred. they are equal to each other if they are at the same pressure.

[Sydney Myers 4I]

The definition of enthaply is heat at a constant pressure. Q is heat, so the two are highly related. You can tell if delta H and q are the same if q has a subscript of p, meaning that it's the heat at a constant pressure.

[Jocelyn Thorp 1A]

Delta H refers to the total heat in a system whereas q is the heat that is being transferred. Delta H is equal to q when the pressure is constant, but if the pressure changes, then they are not the same.

this explanation makes a lot of sense, thanks!

[Jesse H 2L]

delta h and q are the same at constant pressure.

[Megan Cao 1I]

delta H is the enthalpy of the reaction, which is the total heat of the system. q is the heat that is transferred. when pressure's constant, delta h = q_p.

[Jasmine 2C]

q equals delta H when pressure is constant