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Question
Write any two important uses of bases.
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Solution
- Sodium hydroxide is used in the manufacture of soap, paper and a synthetic fibre called rayon.
- Calcium hydroxide (called slaked lime) is used in the manufacture of bleaching powder.
- Magnesium hydroxide is used as an antacid to neutralise excess stomach acid and relieve indigestion.
- Sodium carbonate is used as washing soda and for softening hard water.
- Sodium hydrogencarbonate is used as baking soda in cooking, in baking powders, as an antacid to treat indigestion, and in soda-acid fire extinguishers.
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