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Crystalline and Amorphous Solid

What is the r...

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What is the relation of solubility wrt it's lattice energy and hydration energy??!?

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Q. Sodium sulphate is soluble in water whereas barlum sulphate is sparingly soluble because
(a) the hydration energy of

N a_{2} S O_{4}

is less than its lattice energy
(b) the hydration energy of

N a_{2} S O_{4}

is more than its lattice energy
(c) the lattice energy of

B a S O_{4}

is more than its lattice energy.
(d) the lattice energy has no rolw to play in solubility.

$N a_{2} S O_{4}$ is soluble in water while $B a S o_{4}$ is insoluble. Which of the reason is correct about the above statement

M g S O_{4}

is water soluble but

B a S O_{4}

is not. Reason: The lattice energy of

B a S O_{4}

predominates over its hydration energy while in

M g S O_{4}

M g^{2 +}

being smaller in size and thus hydration energy predominates over lattice energy of

M g S O_{4}

.

Q. Assertion(A) :

N a_{2} S O_{4}

is soluble in water but

B a S O_{4}

is insoluble.
Reason(R) :Lattice Energy of

B a S O_{4}

exceeds its hydration energy.

Q. For two ionic compounds XY and AB, the data of their lattice energy and hydration energy is given as:

\begin{matrix} Compound & Lattice energy (kJ/mol) & Hydration energy(kJ/mol) X Y & 400 & 1000 A B & 600 & 2000 \end{matrix}

What will be the correct order of solubility in water?

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