Proton transfer in water

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Clara Cho 2K
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Proton transfer in water

Postby Clara Cho 2K » Sat Jan 25, 2020 8:41 am

What is the chemical equation for the proton transfer equilibrium in water and the corresponding expression for Ka?
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Anika Chakrabarti 1A
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Re: Proton transfer in water

Postby Anika Chakrabarti 1A » Sat Jan 25, 2020 8:48 am

For a proton transfer between water molecules, the reactants would be 2 H2O molecules and the products would be H3O+ and OH-. Then when you write Ka, you exclude H2O and its just Ka = [H3O+] [OH-], which equals 10^-14 (Kw).
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Rebekah Alfred 1J
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Re: Proton transfer in water

Postby Rebekah Alfred 1J » Sat Jan 25, 2020 11:48 am

This visual shows how the proton transfer occurs between two water molecules:
Image
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Daniel Chen 2L
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Re: Proton transfer in water

Postby Daniel Chen 2L » Sat Jan 25, 2020 3:58 pm

Isn't the Ka for water is 1.0 * 10^-7 at 25 degrees Celsius?
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