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A hydrate of Na(2)SO(3) has 50% water by...

A hydrate of `Na_(2)SO_(3)` has 50% water by mass. It is

A

`Na_(2)SO_(3).5H_(2)O`

B

`Na_(2)SO_(3).6H_(2)O`

C

`Na_(2)SO_(3).7H_(2)O`

D

`Na_(2)SO_(3).2H_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
C
`Na_(2)SO_(3):H_(2)O -= 50:50 (Mw "of" Na_(2)SO_(3) = 126)`
Mole : `(50)/(126) : (50)/(18)`
Ratio : `1 : 7`
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Knowledge Check

  • Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because (a) the hydration energy of Na_(2)SO_(4) is less than its lattice energy (b) the hydration energy of Na_(2)SO_(4) is more than its lattice energy (c) the lattice energy of BaSO_(4) is more than its hydration energy (d) the lattice energy has no role to play in solubility

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    D
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    A
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    B
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    C
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  • Decomposition of a hydrated form of Na_(2)CO_(3) cause approximately 63% loss in its mass on strong heating. If the heating only cause removal of water of crystallization then formula of the hydrated salt is

    A
    `Na_(2)CO_(3).5H_(2)O`
    B
    `Na_(2)CO_(3).10H_(2)O`
    C
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    D
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