Book Online Demo
Check Your IQ
Try Test

Courses

Dropper NEET CourseDropper JEE CourseClass - 12 NEET CourseClass - 12 JEE CourseClass - 11 NEET CourseClass - 11 JEE CourseClass - 10 Foundation NEET CourseClass - 10 Foundation JEE CourseClass - 10 CBSE CourseClass - 9 Foundation NEET CourseClass - 9 Foundation JEE CourseClass -9 CBSE CourseClass - 8 CBSE CourseClass - 7 CBSE CourseClass - 6 CBSE Course

Q.

Anhydrous <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>AlCl</mi><mn>3</mn></msub><mspace linebreak="newline"/></math>is covalent however when it is dissolved in water hydrated ionic species are formed. This transformation is owing to:


see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

Low hydration energy of<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>Al</mi><mrow><mn>3</mn><mo>+</mo></mrow></msup></math>

b

The trivalent state of Al

c

The large hydration energy of<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>Al</mi><mrow><mn>3</mn><mo>+</mo></mrow></msup></math>

d

The polar nature of water 

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Concept- Chemical compounds are generally of two types: covalent compounds and ionic compounds. Ions with the opposite charge form ionic compounds, usually as a result of the reaction of a metal with a nonmetal. In covalent compounds, the elements form the compound by sharing electrons, resulting in an electrically neutral molecule.
In solution, when AlCl3dissolves in water, dissociation occurs and AlCl3 dissociates into Al+3 and Cl-. Now, Hydration of  Al+3 and Cl-ions occur due to the large hydration energy of Al+3 ions as it dissolves in water.
Anhydrous AlCl3 is covalent, but when dissolved in water, hydrated ionic species are formed. This transformation is due to the large hydration energy of Al+3 .
Thus, in liquid or gas phase AlCl3 exists as a covalent compound, or as in the form of dimers.
But, when we dissolve AlCl3 in water, it liberates the ions of aluminium ( Al+3)and chloride ion (Cl-).
Hence, the correct answer is 2.
 
Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Related Blogs
Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
Result Producing online coaching for JEE/NEET of south India
Largest All India Test Series for JEE/NEET
Best Books for IIT JEE
Best Books for NEET
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

Related Blogs
Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
Result Producing online coaching for JEE/NEET of south India
Largest All India Test Series for JEE/NEET
Best Books for IIT JEE
Best Books for NEET
whats app icon