A solution of caustic soda (NoOH) in water or when fused,conducts electric current. What is the similarity in these two cases?

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Solution

When $N a O H$ is fused,if we pass an electric current through it,it breaks up into $N a^{+}$ and $O H^{-}$ . The sodium cation migrates towards the cathode and $O H^{-}$ towards anode.
In case of $N a O H$ solution(dilute $N a O H$ ), the solution breaks into $H^{+}, 2 O H^{-}$ and $N a^{+}$ . Here since the concentration of water is more, $H^{+}$ and $O H^{-}$ are collected first through selective discharge of ions.

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Q. A solution of caustic soda

(N a O H)

in water or when fused, conducts an electric current. What is the similarity in these two cases?

Q. A caustic soda (NaOH) or a potassium iodide (Kl) solution will conduct electricity

Name:

(a) A yellow monoxide that dissolves in hot and concentrated caustic alkali.

(b) A white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.

Question 46

Fill in the blanks to make the statements true.

10g of caustic soda dissolved in 100ml of water makes a solution of caustic soda. Amount of caustic soda needed for 1 litre of water to make the same type of solution is ___.

10.0 g r a m s

of caustic soda when dissolved in

250 {c m}^{3}

of water, the resultant molarity of solution is:

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