Pure substances

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Katherine Grillo 1B
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Joined: Fri Sep 28, 2018 12:28 am

Pure substances

Postby Katherine Grillo 1B » Mon Jan 21, 2019 10:43 am

Why aren't solids and liquids included in K expression? Wouldn't it significantly change K?
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Steven Garcia 1H
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Re: Pure substances

Postby Steven Garcia 1H » Mon Jan 21, 2019 11:06 am

I believe it's because the availability of solids and liquids remains constant whereas the gases don't. The solids and liquids aren't as affected by volume like gases are.
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George Ghaly 2L
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Re: Pure substances

Postby George Ghaly 2L » Mon Jan 21, 2019 2:49 pm

While at equilibrium only aqueous and liquid species are represented in the equilibrium expression as they are the only species can change the concentrations.
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Carlos De La Torre 2L
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Re: Pure substances

Postby Carlos De La Torre 2L » Mon Jan 21, 2019 3:29 pm

This is because solids don't change in concentration because they don't have a concentration and liquids don't change because it is usually in excess and would cancel out on both sides.
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