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Which has the least degree of acidity among HI HCl Hbr and HF and why?
Wiki User
∙ 13y ago
The most acidic is HI with a pKa of -9.5, followed by Hbr then HCl and the least acidic is HF with a pKa of 3.18. The reason is that F is so electronegative it is highly hydrogen bonded. Dilute solutions are weakly acidic.
The iodide ion is the largest of all the halides (Astatine excluded because of its rarity and radioactivity) which results in the negative charge being delocalized over a larger volume of space.
The chloride ion is significantly smaller, meaning its negative charge is more concentrated in a smaller volume of space, leading to a stronger interaction between the proton and the chloride ion. This weaker H+ ---> I- interaction in HI facilitates dissociation of the proton from the anion, and is the reason HI is the strongest acid of the hydrohalides except for hydrohalide formed from Astatine- in theory.
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Wiki User
∙ 13y ago
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Why does dry HCl gas not change the colour of the dry litmus paper?
Litmus paper tests the acidity or baseness of liquids.
What is the purpose of adding HCl in the chlorine water?
To decrease the pH of the pool, hopefully keeping it at whatever alkalinity/acidity you desire.
What is the chemistry behind antacid neutralising HCL?
Antacids are bases that can neutralize many acids like HCL. To neutralize an acid you have to add a base to it. Antacid tablets are used for heartburns and can reduce excess acidity in your stomach
What is the degree Baume of 40 percent HCl?
I believe that this value is 23,96.
What is the difference between fexofenadine hcl and fexofenadine?
Fexofenadine is an amphoteric which have basicity and acidity action (tertiary amine (aromatic amine) is a weak base while carboxylic acid is weak acid) Fexofenadine HCl is designed to be water soluble
Among halogen acids which one the strongest acidriiiiiiiteee?
In terms of acidity HI > HBr > HCl > HF
What acid is responsible for stomach acidity?
Hydrochloric acid (HCl)
What is acidity of hydrogen chloride?
Hydrogen chloride is an acid and its acidity depends on the concentration of the solution. For example, a 0.1M solution of HCl has a pH value of 2.0
What is the purpose of adding HCl in the chlorine water?
To decrease the pH of the pool, hopefully keeping it at whatever alkalinity/acidity you desire.
Why does dry HCl gas not change the colour of the dry litmus paper?
Litmus paper tests the acidity or baseness of liquids.
Which is better company among aricent and hcl technologies?
ARICENT
What is the chemistry behind antacid neutralising HCL?
Antacids are bases that can neutralize many acids like HCL. To neutralize an acid you have to add a base to it. Antacid tablets are used for heartburns and can reduce excess acidity in your stomach
What are LCM and HCL?
LCM stands for "least common multiple" HCL, usually written with a lower case L (HCl), stands for hydrochloric acid.
What is the degree Baume of 40 percent HCl?
I believe that this value is 23,96.
What is the difference between fexofenadine hcl and fexofenadine?
Fexofenadine is an amphoteric which have basicity and acidity action (tertiary amine (aromatic amine) is a weak base while carboxylic acid is weak acid) Fexofenadine HCl is designed to be water soluble
Why does pH of HCl increase as HCl is diluted?
The pH increases because the HCl is becoming less acidic. A pH of 7 is neutral. A pH falls below 7, acidity increases. As pH rises above 7, basicity increases. Diluting HCl means that the HCl becomes less concentrated, and therefore, less acidic. As it becomes less acidic, the pH will become more basic, and thus increase.
Which is least polar HF HBr HCl or Hbr?
HBr
