It looks like there might be a small typo in your measurement—it's possible you meant "6 lbs" instead of "6Iba."
If that's the case, adding 2 teaspoons of baking soda to 6 pounds of flour can be an important part of a recipe for baked goods like bread or cookies. Baking soda helps the dough rise by producing carbon dioxide when it reacts with an acid.
If you have any specific questions or need further details about baking or recipes, feel free to ask!