Kw

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305174946
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Kw

Postby 305174946 » Fri Jan 18, 2019 12:36 pm

When are the concentration of hydronium and hydroxide equal? when in pure water?

Elaine Pham 2E
Posts: 58
Joined: Fri Sep 28, 2018 12:28 am
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Re: Kw

Postby Elaine Pham 2E » Fri Jan 18, 2019 12:39 pm

Yes, in pure water the concentrations of hydronium and hydroxide are equal. When an acid or base is added though, these concentrations can change.

Selina Bellin 2B
Posts: 62
Joined: Fri Sep 28, 2018 12:25 am

Re: Kw

Postby Selina Bellin 2B » Fri Jan 18, 2019 1:03 pm

yes

Lopez_Melissa-Dis4E
Posts: 66
Joined: Fri Sep 28, 2018 12:20 am

Re: Kw

Postby Lopez_Melissa-Dis4E » Fri Jan 18, 2019 1:44 pm

Yes they are equal when in pure water.

JadeSebti1L
Posts: 35
Joined: Fri Sep 28, 2018 12:19 am

Re: Kw

Postby JadeSebti1L » Fri Jan 18, 2019 5:59 pm

Kw=[H3O+][OH-]
Kw= constant 1.0x10^-14
In neutral water with pH=7, the H3O+ and OH- concentrations are equal so
1.0x10^-14=[H3O+][OH-] with both of them being 1.0 x 10^-7.

904914909
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: Kw

Postby 904914909 » Sun Jan 20, 2019 5:09 pm

they are equal in water because they are at equilibrium

Danny Zhang 4L
Posts: 62
Joined: Fri Sep 28, 2018 12:26 am

Re: Kw

Postby Danny Zhang 4L » Sun Jan 20, 2019 7:13 pm

Yes, the concentration of hydronium and hydroxide are equal in pure(neutral) water.


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