K constant and pK value

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gabbymaraziti
Posts: 111
Joined: Wed Sep 18, 2019 12:19 am

K constant and pK value

Postby gabbymaraziti » Wed Dec 04, 2019 6:14 pm

Do we need to know how to calculate the Ka, acid dissociation constant, and Kb, the base dissociation constant? Or are these the same as the K constant itself?

Also, is Kw within our scope?

Andrew Liang 1I
Posts: 105
Joined: Fri Aug 30, 2019 12:18 am

Re: K constant and pK value

Postby Andrew Liang 1I » Wed Dec 04, 2019 8:02 pm

I don't think we will be asked to find the Ka and Kb because they are for weak acid and weak bases. I don't think we will be asked to find those until 14B. I'm not too sure though. Kw was never in the lecture slides, so I doubt that it will be in the exam

Anika Chakrabarti 1A
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am

Re: K constant and pK value

Postby Anika Chakrabarti 1A » Wed Dec 04, 2019 8:52 pm

I'm pretty sure we aren't going to do actual calculations with Ka until 14B. What does Kw represent, though? I don't remember learning that

Haley Fredricks 1B
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Joined: Sat Aug 24, 2019 12:16 am
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Re: K constant and pK value

Postby Haley Fredricks 1B » Wed Dec 04, 2019 8:55 pm

Anika Chakrabarti 3K wrote:I'm pretty sure we aren't going to do actual calculations with Ka until 14B. What does Kw represent, though? I don't remember learning that

Kw represents the constant for H20. Kw=[H+][OH-]=1.0x10^-14


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