names for reaction quotient Q

[jessicasilverstein1F]

Is Qp, Qc, and Q all the same reaction quotient? I am not sure if they all mean the same thing.

[marlene 1K]

So they are all a quotient but Qc is the quotient for molar concentration and Qp is for partial pressure. They're basically the same as Kc, Kp and K and they have the same equation they're just used to specify what they represent if that makes sense. I hope I was clear!

[Alison Perkins 2B]

They can all be calculated in the same way as you would calculate K with products over reactants.
The difference between them is that Q is general, Qc is concentration specific, and Qp is partial pressure specific. Just as is with K, Kp, Kc.
To calculate Qp or Qc, you would need to use the appropriate measurement, but I believe you can use either with calculating Q.

[Eric Cruz 2G]

they are all reactant quotients but the units are different. For Qc, this is measuring concentration (mol/L). Qp measures partial pressure which is generally in atm. Q is the general term for reactant quotient.

[Sara Sandri 2B]

Hey! I interpreted it as Qc being like Kc in that it deals with concentration. Qp deals with pressure (so when we have all gases) like Kp in that sense. Q and K are generally avoided because they just aren't specific enough for what we want to know: are we dealing with all gases? or are aqueous solutions involved? If it just says K and Q then we can't assume anything about what types of species we are dealing with.

[Joshua Swift]

Q_p and Q_c are just more specific ways to account for Q, the reaction quotient. This is the same for K, K_p and K_c.

[Ryan Agcaoili 2E]

These are all the reaction quotients but they apply to different units. Qc deals with molar concentration, so its (mol/L). Qp deals with partial pressure, so its in atm.

[AmyHo2K]

The second letter is just to describe that the reactant quotient is measuring. Qc is used for molar concentration and Qp for partial pressure.

[Morgan Gee 3B]

Q is the general way for writing reaction quotient. To be more descriptive, we use Qc or Qp depending on the phase/state of the chemicals. We use Qc for reaction quotient of concentration. This happens when the chemical species are aqueous (aq) and are given in concentration (mol/L). We use Qp for reaction quotient of partial pressure. This happens when the chemical species are gaseous (g) and are given as pressure/partial pressure.

[Jiayi Wu 3J]

They are basically the same. Qp is calculated using partial pressures and Qc is calculated using concentrations.

[Kiran Marla]

Q is a general term which can be both Qc or Qp. However, Qc is specific when using concentrations, while Qp is used when using partial pressures.

[Megan ODonnell 3F]

Q refers to a general reactant quotient regardless of whether it is referring to a concentration or pressure, Qc is a reactant quotient regarding concentration and Qp is a reactant quotient regarding pressure.

[KhanTran3K]

Hey!
With Qp and Qc, they are both calculated in the same way and represent the reaction quotient at anytime in a reaction. They are basically the same, but Qp represents the reaction quotient for the partial pressure while Qc represents the reaction quotient for the concentration of the reaction. With this, these are calculated similarly to K as well, but they are not necessarily at equilibrium. Hope this helps!

[Lilly Catarozoli 1B]

Qp and Qc are all Q just with different units (pressures vs. concentrations).

[Alexandra Salata 2L]

They all measure the reaction quotient but specifically, Qp measures partial pressure and Qc measures concentration. SO depending on what the question is asking for, you would substitute one into the equation.

[Frankie Mele 3J]

Q always represents the reaction quotient, but the terms Qp and Qc are just more accurate and specific ways to represent the reaction quotient in reactions using either partial pressures or concentrations.

[Juwan_Madaki_3K]

Qc is used for molar concentration, Qp is used for partial pressure, and Q represents the reaction quotient in general. However, Qc, Qp, and Q are all calculated the same as K. The products will be in the numerator and the reactants in the denominator.

[AnjikaFriedman-Jha2D]

They are all names for reaction quotient just referring to different measurements whether that be partial pressure or concentration in molarity etc.

[Mackenzie Stockton 2H]

Q can mean either Qp or Qc. Qp uses the partial pressures of each species (raised to a certain power if necessary), and is when all the elements in the equation are all gases, as solids and liquids can't exert partial pressure. Qc uses molar concentrations of each reactant and product (exclude solvents and solids).

[Sai Ramadas 1J]

Although all of them are considered reaction quotients, they do not mean the same things. Qp is acquired from partial pressures (units: atm), while Qc is acquired from molar concentrations (mol/L). You can calculate these the same way you calculate K.