## 12.49 Stronger Base

Acidity $K_{a}$
Basicity $K_{b}$
The Conjugate Seesaw $K_{a}\times K_{b}=K_{w}$

Victoria Ford 4D
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### 12.49 Stronger Base

Which is the stronger base, the hypobromite ion, BrO , or morphine, C17H19O3N? Justify your answer.

Without Kb values, how would you determine this?

Chem_Mod
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### Re: 12.49 Stronger Base

Morphine is basic because it has a nitrogen with lone pair. These kinds are always weak base.

BrO- is the conjugate base of a weak acid, so it must be relatively strong. So BrO- is the stronger base.

704647747
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### Re: 12.49 Stronger Base

How do we know that BrOH is a weak acid?

Xiaoman_Kang_2J
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### Re: 12.49 Stronger Base

Jane Park 1A wrote:How do we know that BrOH is a weak acid?

HBrO is a weaker acid compared to HClO. This is because Cl is more electronegative than Br. Thus, Cl will draw more electron density towards itself and away from the O-H bond which makes the O-H bond in HClO easier to break. Therefore, HBrO is a weak acid (weaker than HClO).

Camille 4I
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### Re: 12.49 Stronger Base

How do we know that HBrO is the corresponding weak acid that creates the base BrO-?

FDeCastro_1B
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### Re: 12.49 Stronger Base

Camille 4I wrote:How do we know that HBrO is the corresponding weak acid that creates the base BrO-?

I think it's the conjugate acid that receives a proton from the base. Hence why there is now an H in the formula.

FDeCastro_1B
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### Re: 12.49 Stronger Base

Could you argue that BrO is the stronger base because it's protonated more completely than morphine?