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(a) Name two constituents of baking powder.
(b) How does baking powder differ from baking soda?
(c) Explain the action of baking powder in the making of cake (or bread). Write equation of the reaction involved.
(a) Sodium hydrogen carbonate and tartaric acid are the two constituents of baking powder.
(b) Baking powder is a mixture of baking soda and tartaric acid and baking soda is only sodium bicarbonate.
(c) On mixing baking powder with water, for making the cake, sodium bicarbonate reacts with tartaric acid to evolve carbon dioxide gas which interacts with the wet dough and bubbles out. Thus, the cake becomes soft and spongy.
The reaction is given by:
$NaHCO_3(aq) + H^+ → Na^+(aq) + CO_2(g) + H_2O(l)$
Updated on: 10-Oct-2022
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