(a) Uses of Washing Soda:
(i) It is used for removing permanent hardness of water.
(ii) It is used in the manufacture of sodium compounds such as borax.
(b) Uses of Baking Soda:
(i) It is used in making baking powder. Baking powder is a mixture of baking soda and a mild edible acid called tartaric acid. When baking powder is heated or mixed in water, it releases CO2 that makes cakes or bread fluffy.
(ii) It is used in soda-acid fire extinguishers.
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