Question

How does baking soda help to make cake and bread soft and sponhy?

Answer 1

the reaction between baking soda and any acid such as tartaric acid which gives out co2, h20 and sodium salt of acid
carbon dioxide produced during the reaction causes bread or cake to rise making them soft and spongy

Answer 2

While baking mixture of baking soda and vinegar or tartaric acid is used .It react with tartaric acid and produce tartare salt and CO2 and water
This co2make cake soft and puffy