Solving for K (coefficients)


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Andrea_Torres
Posts: 98
Joined: Sun Sep 15, 2019 12:15 am

Solving for K (coefficients)

Postby Andrea_Torres » Thu Jan 09, 2020 5:27 pm

When solving for K to the coefficients have to be in a particular order?

Parker Smith
Posts: 102
Joined: Thu Jul 25, 2019 12:15 am

Re: Solving for K (coefficients)

Postby Parker Smith » Thu Jan 09, 2020 5:44 pm

The coefficients need to be assigned to their specific molecules/compounds

Sartaj Bal 1J
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: Solving for K (coefficients)

Postby Sartaj Bal 1J » Thu Jan 09, 2020 5:55 pm

Usually, the stoichiometric coefficients of the balanced equation are the exponent for each compound in the equilibrium equation. As long as all the products are placed in the numerator and all reactants in the denominator, the equation should work.

MeeraBhagat
Posts: 95
Joined: Sat Aug 24, 2019 12:15 am

Re: Solving for K (coefficients)

Postby MeeraBhagat » Thu Jan 09, 2020 6:17 pm

You raise the value the concentration of a certain reactant/product to their respective coefficients in the balanced chemical equation.

Amir Bayat
Posts: 115
Joined: Sat Sep 07, 2019 12:16 am

Re: Solving for K (coefficients)

Postby Amir Bayat » Thu Jan 09, 2020 6:20 pm

The stoichiometric coefficients are the powers that the concentration or pressure of the product or reactant are raised to.

Junwei Sun 4I
Posts: 125
Joined: Wed Oct 02, 2019 12:16 am

Re: Solving for K (coefficients)

Postby Junwei Sun 4I » Thu Jan 09, 2020 11:42 pm

The coefficients become the power of the molar concentrations in the expression for K and they have to be assigned to the specific molecules as they are in the chemical equation. For example in H2 + I2 --> 2HI,

[H2] and [I2] will have a power of 1
[HI] will have a power of 2

RobertXu_2J
Posts: 104
Joined: Fri Aug 30, 2019 12:17 am

Re: Solving for K (coefficients)

Postby RobertXu_2J » Fri Jan 10, 2020 1:43 am

No they do not, since multiplication exhibits commutative properties (a*b = b*a).

gabbymaraziti
Posts: 111
Joined: Wed Sep 18, 2019 12:19 am

Re: Solving for K (coefficients)

Postby gabbymaraziti » Fri Jan 10, 2020 11:16 am

The reactants/products don't have to be in a specific order in the calculation of K itself, but the stoichiometric coefficients should be assigned to their respective reactant/product.

Rodrigo2J
Posts: 102
Joined: Sat Jul 20, 2019 12:16 am

Re: Solving for K (coefficients)

Postby Rodrigo2J » Fri Jan 10, 2020 11:19 am

the coefficient becomes the exponent of whichever product or reactant it precedes. So as long as you keep the coefficient with the correct reactant or product it's assigned to you should be fine I think.

Charysa Santos 4G
Posts: 107
Joined: Wed Sep 18, 2019 12:21 am

Re: Solving for K (coefficients)

Postby Charysa Santos 4G » Fri Jan 10, 2020 12:30 pm

The coefficients are attached to the particular reactant/product as you balance the equation. This coefficient becomes the exponent to the same reactant/product when calculating Q or K.

Angela Prince 1J
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am

Re: Solving for K (coefficients)

Postby Angela Prince 1J » Fri Jan 10, 2020 4:40 pm

The coefficients go with the molecule it is next to in the chemical reaction. The coefficients will be the exponent the concentration of the respective molecule is raised to.

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

Re: Solving for K (coefficients)

Postby Anthony Hatashita 4H » Fri Jan 10, 2020 10:47 pm

Just make sure the coefficients for specific molecules remain on the same molecules as a power when calculating K.


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