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What is 'baking powder' ? How does it ma...

What is 'baking powder' ? How does it make the cake soft and spongy ?

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Baking powder is a mixture of baking soda `(NaHCO_3)` and an edible acid like tartaric acid.
Baking powder on heating produces carbon dioxide gas which causes break or cake to rise making it soft and spongy.
`underset("Baking soda")underset("hydrogencarbonate")underset("Sodium")(NaHCO_3)+underset("From tartaric acid")(H^(+))overset("Heat")rarrCO_(2)+H_(2)O+` Sodium salf of tartaric acid
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