I accidentally put in banana bread 1 1/2 tsp of baking soda instead of 3/4 tsp of baking soda. Is it going to be edible?
Edible, yes. The best banana bread you've ever had? Probably not.
Over-leavened quick breads tend to just get uneven in texture - you may get an uneven loaf with one section that's a little too dense and other sections that are a little too airy, or the whole thing may end up coarse and a little flatter than you'd prefer. But these breads are often rich enough that they're still perfectly tasty.
There's a little risk of the extra baking soda introducing an off flavor, but in practice, I've found that most people won't notice it until you're WAY over-leavened. Taste buds vary but I don't think it'll be an issue for you.
It's been an hour since you've posted the question so I'm assuming that we will have the actual answer pretty shortly.
We just made banana bread 1 tsp per three mini loafs. Accidentally used 1 Tablespoon. Oh mg. It has a funny after taste. Bummer. Going to let other people ea it and go back to the drawing board.