Question

how does baking powder differ from baking soda

Answer 1

But it can make a big difference for baked goods, so let's explain. 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.

Answer 2

baking powder contains sodium bicarbonate,but it also includes the acidifying agent-tartar and the drying agent starch.baking powder is available in both single and double active tendencies

baking soda is pure sodium bicarbonate.

i hope it helps....