1.Put said powder in question inside a large cylinder or clay volcano preferred
3.mix vinegar and powder inside the container in a mess safe place like outside or a sink
4.Check to see if it bubbles and spits like a volcano.
5.if it spits and bubbles like a volcano it is baking soda,
if it doesnt bubble, congrats, you just ruined your coke.
Don't do drugs folks, drugs are bad