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Assertion : The decahydrated form of sod...

Assertion : The decahydrated form of sodium carbonate on standing in air effloresces.
Reason : It converts into monohydrate having formul, `Na_(2)CO_(3).H_(2)O`.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
b
`Na_(2)CO_(3).10H_(2)Ooverset("air")underset(-9H_(2)O)rarrNa_(2)CO_(3).H_(2)O`
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A2Z-S BLOCK ELEMENTS ( GROUP 13 - 14)-Section B - Assertion Reasoning
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  6. Assertion : Sodium bicarbonate generally precipitates normal carbonate...

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  9. Assertion : White precipitate of BaSO(4) is insoluble in water but rea...

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  10. Assertion : The dissolution of alkali metal hydroxides in water is an ...

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  13. Assertion : Lithium is the weakest reducing agent among the alkali met...

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  14. Assertion (A): Aqueous solution of Na(2)CO(3) is alkaline in nature. ...

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  20. Assertion : As the very dilute solutions of alkali metals in liquid am...

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