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Saturated,Unsaturated and Supersaturated Solutions

To determine ...

Question

To determine whether a water solution of ${N a}_{2} S_{2} O_{3}$ at room temperature is supersaturated, one can :

heat the solution to its boiling point

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add water to the solution

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add a crystal of

{N a}_{2} S_{2} O_{3}

to the solution

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acidify the solution

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cool the solution to its freezing point

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Solution

The correct option is B add a crystal of ${N a}_{2} S_{2} O_{3}$ to the solution
To determine the supersaturation of $N a_{2} S_{2} O_{3}$ solution, just add a crystal of $N a_{2} S_{2} O_{3}$ and if it is not dissolved that means the solution is supersaturated.

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Similar questions

Select the one which describe the best among all the given options.

To determine whether a water solution of $N a_{2} S_{2} O_{3}$ at room temperature is supersaturated, one can:

3 M

{N a}_{2} S_{2} O_{3})

1.56 g / m L

{N a}_{2} S_{2} O_{3}

{N a}_{2} S_{2} O_{3}

{N a}^{+}

S_{2} O_{3}^{2 -}

{N a}_{2} S_{2} O_{3} \cdot 5 H_{2} O

100 m L

0.25 N

K I

C u S O_{4}

{N a}_{2} S_{2} O_{3}

2 {N a}_{2} S_{2} O_{3} + I_{2} \to {N a}_{2} S_{4} O_{6} + 2 N a I

{N a}_{2} S_{2} O_{3}

(m o l . w t . = M)

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