A student has an unknown powder and wants to determine what it is.based apperence the student believes it is baking soda.When preforming the vingar test,what can the student expect to happen if its baking soda.

Question

A.It will crystallize into a sugar-like substance
B.it will bubble and foam
C.It will turn a blue-black color
D.It will turn into a sold glass-like substance

Answer 1

If the unknown powder is baking soda (sodium bicarbonate), the student can expect that when vinegar (which contains acetic acid) is added, a chemical reaction will occur. This reaction produces carbon dioxide gas, which will cause bubbling and foaming.

Therefore, the correct answer is:

B. it will bubble and foam.