A student takes Na2CO3 powder in a test tube and pours some drops of acetic acid over it. He observes:
no reaction in the test tube
colourless gas with pungent smell with brisk effervesence
bubbles of a colourless and odourless gas
white fumes with smell of vinegar
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Verified answer
It will evolve carbon dioxide gas with pungent smell.Please mark it as a brainliest answer.