Calculating Q

[205389184]

When calculating Q, how come we include aqueous substances?

[Nicholas Chin 1G]

Calculating Q is the same as calculating for K, which means you include all aqueous solutions and gases, and disregard liquids/solids.

[MingdaH 3B]

Q calculations are only for aqueous solutions and gases, by definition.

[Philomena 4F]

Q is calculated the same way as K = [P]/[R], including only the aqueous/gas molecules. Though Q is determined for reactions that are not in equilibrium state.

[Samuel Tzeng 1B]

Since the activity of solids and liquids are equal to 1, they aren't included in the calculation of Q and K, this leaves only gases and aqueous substances

[Cavalli_1H]

Q is calculated the same way as K, and K includes gases and aqueous solutions for its calculation

[505306205]

Calculating Q is the same as calculating K.

[SVajragiri_1C]

The rule is to include all aqueous solutions and gases, just like you would to calculate K.

[sarahartzell1A]

You include the aqueous solutions.

[Kayli Choy 2F]

Additionally, calculating Q is important because it can be compared to K in order to determine the direction the reaction is proceeding. When Q=K, the reaction is at equilibrium composition.

[preyasikumar_2L]

You calculate Q the same way as you'd calculate K, using the gases and aqueous substances involved in the reaction. The only difference between Q and K is that Q can be different values since it can be calculated at any point during the reaction, while the K for a reaction at a specific temperature/pressure is always constant since it is the value of the ratio of concentrations/partial pressures of products to reactants at equilibrium.

[Caroline Zepecki]

For calculating either Q or K, every time you online include gasses or aq. Never solids or solvents in the calculations

[faithkim1L]

When you calculate Q, you use the exact same process as if you were calculating for K. This means that you include all aqueous solutions and gases. Do not include solids or liquids in your calculations for Q (or K for that matter).

[ThomasNguyen_Dis1H]

Q is calculated the same way as K so you include aqueous and gas in the calculation for Q

[Zaynab Hashm 2I]

We calculate Q the same way we calculate K, and we account for both aqueous and gaseous states. However, liquids and solids are disregarded when calculating the constants. The only difference is that Q indicates the change in the reaction/system at any time before reaching equilibrium, but K is at equilibrium.

[Joanne Lee 1J]

We include aqueous solutions because Q is calculate the same way as K and K includes aqueous solutions.

[Uisa_Manumaleuna_3E]

Q and K require aqueous solutions because their concentrations do change in the system depending on the rate of reaction