Comparing K Values

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Labiba Sardar 2A
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Joined: Sat Jul 20, 2019 12:15 am

Comparing K Values

Postby Labiba Sardar 2A » Sun Jan 12, 2020 12:30 pm

When you're comparing two different K values, what does it mean by which reaction would be "thermodynamically more stable"?

Posts: 101
Joined: Thu Jul 11, 2019 12:17 am

Re: Comparing K Values

Postby dtolentino1E » Sun Jan 12, 2020 1:20 pm

i think being more thermodynamically stable means that the equation's K value is closer to 1 (meaning that the products and reactants have equal values at equilibrium)

Sidharth D 1E
Posts: 98
Joined: Sat Aug 24, 2019 12:17 am

Re: Comparing K Values

Postby Sidharth D 1E » Sun Jan 12, 2020 7:48 pm

When K is at or near 1, the energy of the reactants and the products are the same, which is extremely rare.

Vincent Leong 2B
Posts: 207
Joined: Fri Aug 09, 2019 12:15 am

Re: Comparing K Values

Postby Vincent Leong 2B » Sun Jan 12, 2020 8:00 pm

K values represent how easily it is to create or break bonds. When you break down a compound, for example, PCl5 to Cl2 and PCl3 and the K constant is 111111. That number is very high, meaning there is more products than reactants at equilibrium and thus the bonds of PCl5 can be easily broken and thus PCl5 is not thermodynamically stable compared to another molecule with a lower K constant.

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Re: Comparing K Values

Postby saigorijavolu2k » Sun Jan 12, 2020 8:15 pm

When K is closer to 1, then that means reactant and product concentrations are the same so that is thermodynamically stable

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