CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Strongest acid is


  1. Al2O3

  2. MgO

  3. Na2

  4. CaO


Solution

The correct option is A

Al2O3


Now, we can say that The normal oxide formed by the elementon extreme left is the most basic (e.g., Na2O), whereas that formed by the element on extreme right is the most acidic (e.g., Cl2O7). Oxides of elements in the centre are amphoteric (e.g., Al2O3, As2O3) or neutral (eg., CO, No, N2O). Amphoteric oxides behave as acid with bases and as base with acids, whereas neutral oxides have no acidic or basic properties.
With increase in oxidation number acidic character increases and basic character decreases. The oxides formed by element on extreme left is most basic (eg: Na2O) where as on extreme right is the most acidic (eg. Cl2O7), oxides of elements in the centre are amphoteric (e.g., Al2O3, As2O3) or neutral (eg. Co, No, N2O).
Therefore, we can say that

Ca, Na and Mg has more basic character rather than acidic character.
Elements from group 1 and 2 does not show acidic character
While oxides of Aluminium will be amphoteric in nature, i.e., they will show both acidic as well as basix character.
Therefore,
Al2O3 is strongest acid among these.

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image