Periodic Classification And Periodic Properties Ques 24
24. Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because
(1989, 1M)
(a) the lattice energy of sodium sulphate is more than its hydration energy
(b) the lattice energy of barium sulphate is more than its hydration energy
(c) the lattice energy has a role in solubility
(d) the hydration energy of sodium sulphate is greater than its lattice energy
Assertion and Reason
Read the following questions and answer them as per the direction given below :
(a) Statement I is true; Statement II is true; Statement II is the correct explanation of Statement I.
(b) Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.
(c) Statement I is true; Statement II is false.
(d) Statement I is false; Statement II is true.
Show Answer
Answer:
Correct Answer: 24.(d)
Solution:
- (a) Correct For greater solubility, hydration energy must be greater than lattice energy.
(b) Greater lattice energy discourages dissolution of a salt.
(c) Incorrect When a salt dissolves, energy is required to break the lattice, which comes from the hydration process.
(d) Correct Explained in (A).
BETA
