Which among the following is the strongest acid?
Show Hint
The distance between the hydrogen and halogen atoms rises as the anion's size grows. For hydracids, it gets simpler to liberate H + ions as we move down in the halogen group.
- HF
- HCl
- HBr
- HI
The Correct Option is D
Approach Solution - 1
Among hydrogen halides the strongest acid is HI. As the size of halogen increase, bond length increase hence bond energy decreases. So, the HI releases \(H ^{\oplus}\) ions easily and show high acidic nature.
The distance between the hydrogen and halogen atoms rises as the anion's size grows. For hydracids, it gets simpler to liberate H + ions as one move down in the halogen group.
So, the order will be HI>HBr>HCl>HF and HI is the strongest among them.
Discover More From This Chapter: Acids and Bases
Approach Solution -2
The Correct Answer is(D)
Real Life Applications
Hydrogen Iodide is the strongest among the option and its applications are:
- It serves as an analytical reagent and reducing agent. It is also used in the production of pharmaceuticals, disinfectants, and other chemicals. It is provided as a compressed, liquefied gas.
- Additionally used in the creation of synthetic drugs, colors, spices, iodized salt, and analytical reagents.
- Additionally used as generic reagents by middlemen in the pharmaceutical sector.
- Additionally used as an analytical reagent and in the production of iodides.
- may dissolve acid-insoluble inorganic compounds like mercury iodide and the sulfate of alkaline earth metals. an agent that reduces. preparation for iodide. Insoluble organic substances that can be utilised to identify the methoxy group include mercury iodide and alkaline earth metal sulfate.
Question can also be asked as
- What is the strongest acid in this list?
- Rank these acids from strongest to weakest.
- Which acid has the lowest pH?
- Which acid has the highest Ka value?
- Which acid is most likely to donate a proton?
Approach Solution -3
The Correct Answer is(D)
When contrasting the elements in the same periodic table group, the sequence of the H-A bond's acidic intensity is thought to be more crucial in determining the acidity than the polarity.
- The H-A bond strength drops down as the size of A increases when descending a group, increasing the acid strength.
- For instance, the period table's group 17 hydrides' acid strengths rise in the following order: HF < HCl < HBr < HI.
Strong Acids
The chemical reaction as follows causes a strong acid to dissociate:
HA + S \(\rightleftharpoons\) SH+ + A-
When the concentration of the undissociated species HA is too low to be observed, S denotes a solvent molecule.
HCl (in aqueous solution) = H+ + Cl-
Weak Acids
A weak acid is a chemical that partially dissociates when it is dissolved in a solvent. The acid, HA, and dissociation products are in equilibrium in the solution.
HA \(\rightleftharpoons\) H+ + A-
Also Read:
Related Topics | ||
|---|---|---|
| Acid Test | Acid Strength | Properties of Acids and Bases |
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Concepts Used:
Alkenes
Alkenes
In organic chemistry, an alkene is a hydrocarbon containing a carbon-carbon double bond.[1]
Alkene is often used as synonym of olefin, that is, any hydrocarbon containing one or more double bonds.
Read More: Ozonolysis
IUPAC Nomenclature of Alkenes
- An alkene or cycloalkene is indicated by the suffix (ending) ene.
- For the root name, the longest chain must include both carbon atoms of the double bond.
- The root chain must be numbered beginning at the end closest to a double bond carbon atom. If the double bond is in the chain's centre, the nearest substituent rule is used to determine where the numbering begins.
- If the compound contains more than one double bond, it is named with a diene, triene, or equivalent prefix indicating the number of double bonds, and each double bond is assigned a locator number.
Read More: Unsaturated Hydrocarbon