SELECT * FROM question_mgmt as q WHERE id=3225 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=50 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th chemistry Hydrogen how can saline hydrides remove traces of water fro

Question:

How can saline hydrides remove traces of water from organic compounds?

Answer:

Saline hydrides areionic in nature. They react with water to form a metal hydroxide along with the liberation of hydrogen gas. The reaction of saline hydrides with water can be represented as:

AH(s) +  H2O(l)  →  AOH(aq) + H2(g)

(where, A = Na, Ca,……)

When added to an organic solvent, they react with water present in it. Hydrogen escapes into the atmosphere leaving behind the metallic hydroxide. The dry organic solvent distills over.


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