solids and liquids

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alanaarchbold
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Joined: Fri Sep 28, 2018 12:27 am

solids and liquids

Postby alanaarchbold » Sun Jan 13, 2019 3:36 pm

Why don't the molar concentrations of solids and liquids change in a reaction?

505095793
Posts: 61
Joined: Fri Sep 28, 2018 12:25 am

Re: solids and liquids

Postby 505095793 » Sun Jan 13, 2019 4:18 pm

Pure liquids and solids have definite molar concentrations. Gases and aqueous solutions have variable molar concentrations because there is a certain amount of moles of a substance in a certain volume, hence the molarity= moles/Liters. Therefore when pure solids and liquids are involved in a reaction there are no changes in the molarity (mol/L) so the concentrations are constant.

005113695
Posts: 59
Joined: Fri Sep 28, 2018 12:15 am

Re: solids and liquids

Postby 005113695 » Sun Jan 13, 2019 7:05 pm

Solid and Liquid concentrations change very little, and the amount is insignificant so that they don't need to be included.

Jchellis 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: solids and liquids

Postby Jchellis 1I » Sun Jan 13, 2019 8:40 pm

So because they are constants they have no effect on whether the reaction favors the reactants or the products?

Anjali 4A
Posts: 59
Joined: Fri Sep 28, 2018 12:28 am

Re: solids and liquids

Postby Anjali 4A » Sun Jan 13, 2019 9:38 pm

Because molar concentration of a pure substance (solid or liquid) does not change in a reaction and is therefore not included in equ. constant

allisoncarr1i
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Re: solids and liquids

Postby allisoncarr1i » Wed Mar 13, 2019 10:12 am

Jchellis 1I wrote:So because they are constants they have no effect on whether the reaction favors the reactants or the products?

yes that is correct


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