Question

Given below are two statements Statement--I: The number of water molecules associated with \(\mathrm{LiCl}\), \(\mathrm{NaCl}\), \(\mathrm{CaCl_2}\) are \(2,\ 2,\ 6\) respectively. Statement--II: Both \(\mathrm{LiCl}\) and \(\mathrm{MgCl_2}\) are soluble in ethanol. The correct answer is

• A. Both statements I and II are correct
• B. Statement I is correct, but statement II is not correct
• C. Statement I is not correct, but statement II is correct
• D. Both statements I and II are not correct

Hint:

Remember: \[ \boxed{ \mathrm{LiCl} \text{ and } \mathrm{MgCl_2} \text{ are soluble in ethanol due to their appreciable covalent character.} } \]

Answer 1

The Correct Option is C

Step 1: Examine Statement--I. Common hydrated salts are \[ \mathrm{LiCl\cdot H_2O}, \] \[ \mathrm{NaCl} \] (does not normally exist as a hydrated salt), and \[ \mathrm{CaCl_2\cdot6H_2O}. \] Hence, the statement that the associated water molecules are \[ 2,\ 2,\ 6 \] is incorrect. Therefore, \[ \boxed{\text{Statement--I is false}.} \]

Step 2: Examine Statement--II. Both \[ \mathrm{LiCl} \] and \[ \mathrm{MgCl_2} \] are appreciably soluble in ethanol because of their relatively higher covalent character. Hence, \[ \boxed{\text{Statement--II is true}.} \] Therefore, \[ \boxed{\text{Statement I is not correct, but Statement II is correct}.} \] Thus, \[ \boxed{(C)} \] is the correct answer.