Question

Difference between baking soda and baking powder......

Answer 1

Baking soda has only one ingredient: sodium bicarbonate. Sodium bicarbonate is a base that reacts when it comes into contact with acids, like buttermilk, yogurt or vinegar. This reaction produces carbon dioxide (CO2) in the form of bubbles, like a liquid foam (think of the grade school experiments involving fake volcanoes, vinegar and baking soda). because the trapped co2 gas makesthe doughor batter rise.But when baking soda  comes into contact  with an acid,   it pretty much reacts immediately. And that’s a problem.For many baking recipes,  you want an extended reaction,so that the  rising doesn't take place all at once.Baking powder addresses this problem because it is “double acting” – it has different ingredients that creat CO2 gas at different stages of the baking processe .All baking powders contain sodium bicarbonate (just like baking soda). But baking powder also contains two acids.One of these acids is called monocalcium phosphate. Monocalcium phosphate doesn’t react with the  sodium bicarbonate while it’s dry.But as soon as the baking powder is stirred into a wet dough  or batter, the two ingredients begin to react, releasing  bubbles of CO2 and causing chemical leavening.

Answer 2

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❥Comparisons/Baking Soda vs Baking Powder

Baking soda contains one ingredient, sodium bicarbonate.

However, Baking powder contains sodium bicarbonate, monocalcium phosphate and either sodium acid pyrophosphate or sodium aluminum sulfate.