When calcium nitrate crystals are exposed to air, a solution is formed.

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Solution

calcium nitrate is deliquescent(becoming liquid, or having a tendency to become liquid) in nature .
It absorbs moisture from the air and becaomes a complete solution.

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N a_{2} C O_{3} . 10 H_{2} O e x p o s e d - --- \to t o a i r N a_{2} C O_{3} . H_{2} O + 9 H_{2} O

This process is called:

What happens when crystals of washing soda are exposed to air?

Q. What happens when crystals of washing soda are left exposed to air?

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When calcium nitrate crystals are exposed to air, a solution is formed.

calcium nitrate is deliquescent(becoming liquid, or having a tendency to become liquid) in nature .It absorbs moisture from the air and becaomes a complete solution.

calcium nitrate is deliquescent(becoming liquid, or having a tendency to become liquid) in nature .
It absorbs moisture from the air and becaomes a complete solution.