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  #1  
April 12th, 2017, 03:30 PM
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HF is weaker than HCL

Hi I would like to know why hydrofluoric acid is a weak acid and why HCL is a strong acid?
  #2  
April 12th, 2017, 03:58 PM
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Join Date: Mar 2012
Re: HF is weaker than HCL

Bond amongst Flourine and Hydrogen is exceptionally solid due to high electronegativity distinction. That is the reason Flourine doesn't release Hydrogen effortlessly. So degree of giving H+ in is low in HF that is the reason it is viewed as powerless corrosive.

Hydrochloric corrosive is a solid corrosive. Solid acids are solid electrolytes, which, for most intentions, are accepted to ionize totally in water. For this situation, HCl ionizes totally to hydrogen particles, H+ and chloride particles, Cl-. ... Hydrofluoric corrosive is a powerless corrosive.

HF is the weakest corrosive in view of it's solid H-F bond. Fluorine being little in size covers better with 1s orbital of hydrogen prompting a solid bond. Hence can not give proton easily.Here bond quality overweighs the electronegativity of F .

As it goes down the gathering, size of the incandescent lamp increases. This brings about poor cover of it's orbital with 1s orbital of hydrogen making the H-X bond weaker. H-I bond is the weakest of all , so it is the most grounded corrosive.

HF has high bond vitality inferable from its little size and high electronegativity.

A substance can be acidic when it can separate genuinely well in a solution. HCl, HBr, HI are genuinely solvent in a diminishing request yet ionize easily.

HF, thusly separates the H2O structure of water yet doesn't shape the required particles effortlessly ,as required in any solid corrosive.

So, by standard meaning of acidity, HF has high bond vitality which keeps it's simple separation and thus, HF is a weak acid.

HF is to a great degree Corrosive however a weak acid.


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