How is sodium hydroxide produced on an industrial scale?
- ABy the electrolysis of sodium chloride in the Castner-Kellner cell.
- BBy the reaction of sodium carbonate with calcium hydroxide.
- CBy the reaction of sodium metal with water.
- DBy the thermal decomposition of sodium bicarbonate.
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State the reasons for the following:
$(a)$ Why is a solution of $Na_{2}CO_{3}$ alkaline?
$(b)$ Why are alkali metals prepared by the electrolysis of their fused chlorides?
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$(b)$ Why are alkali metals prepared by the electrolysis of their fused chlorides?
$(c)$ Why is sodium found to be more useful than potassium in biological systems?
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