Linked Questions

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2answers
4k views

Does the acid strength of hydrochloric and hydrofluoric acid correlate with the electronegativity of the halides? [duplicate]

Is this statement true or false? HCl is a stronger acid than HF because fluorine is more electronegative than chlorine. I'm thinking this is true, because since fluorine is more electronegative ...
1
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1answer
2k views

How can a bond be more stable and more polar at the same time? [duplicate]

When comparing the acidic strength of the halogen acids, we see that the acidic strength decreases as $\ce{HI>HBr>HCl>HF}$. It is said that the reason for this is the bond strength of $\ce{HI}...
1
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1answer
128 views

Why do Hydrogen Halides(with the exception of HF) form mostly strong acids? [duplicate]

Why do Hydrogen Halides(with the exception of HF) form mostly strong acids? My guess is that the negatively charged Halide part of the molecule is attracted by the partially positive part of the water ...
12
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2answers
15k views

Do hydrogen halides (HX) form strong or weak acids?

I know that when dissolved in water, hydrogen halides ($\ce{H-X}$), become acids. I know that $\ce{HF}$ forms a weak acid, but can it be generalized that all $\ce{HX}$ acids do so?
9
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1answer
402 views

Can the idea of entropy be extended to orbitals?

The forward reaction for: $\ce{HF<->H^+ +F^-}$ is entropically favourable; but energetically unfavorable: as there is too much electron density for $\ce{F^-}$ ion to cope up. That's a reason why ...
3
votes
2answers
3k views

Why exactly is a fluoride anion a stronger base than iodine anion?

First off, I've learnt that stronger acids produce weaker conjugate bases (through Brønsted–Lowry acid–base theory). Then I looked at the $\mathrm{p}K_\mathrm{a}$ values of $\ce{HF}$, $\ce{HCl}$, $\...
9
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1answer
2k views

Hydrogen halide acidity

Why is it that $pK_{\ce{a-HF}} \lt pK_{\ce{a-HCl}}\lt pK_{\ce{a-HBr}}\lt pK_{\ce{a-HI}}$, although the electronegativity decreases? The more electronegative the atom accompanying hydrogen, the lower ...
4
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1answer
2k views

Solubility vs Dissociation of HF

Ok, so I understand that solubility is a measure of how well a compound is solvated by the solvent. And dissociation is a measure of how much of a compound splits into its ionized forms. Does HF have ...
3
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1answer
893 views

why HI isn't fully miscible with cold water when HF is?

HF is more soluble in water than HI , due to greater hydrogen bonding in HF , accepted but, on the other hand HF is a very weak acid so it's dissociation will be meagre when compared to HI's ...
1
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2answers
995 views

How to estimate the equilibrium constant of the reaction between NaF and HCl

Since $\ce{HCl}$ is more acidic than $\ce{HF}$, the left hand side of a reaction has a stronger acid than the right hand side. Since $\ce{NaF}$ is more basic than $\ce{NaCl}$, the left hand side has ...
-1
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1answer
219 views

Which of the following has a stronger hydrogen bonding: F-H- -O or F-H- -F?

I thought of two approaches to solve this question . Since the electronegativity of Oxygen is lower than Fluorine it would be a better donor than Fluorine to the electron deficient Hydrogen . Another ...
1
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1answer
69 views

Why does HF generate a carbocation with an alkene

I was reading of different ways to perform Friedel Craft alkylations. One of the methods I came across involved an alkene in the presence of H+ or a mineral acid like $\ce{HF}$. Here $\ce{H+}$ or $\ce{...
-6
votes
1answer
93 views

Reaction of HF in water [closed]

I was wondering, if we put $\ce{HF}$ into a glass of water the acid will be dissolved according to this reaction: $$\ce{HF->F- + H+}$$ Now there is a proton travelling across the water. All $\ce{...