Question

Take a teaspoon of vinegar in a test tube. Add a pinch of baking soda to it. You would hear a hissing sound and see bubbles of gas coming out. Pass this gas through freshly prepared lime water. What happens to the lime water? Also, mention the reaction that takes place. Please answer only if you know else l will have to report.

Answer 1

Answer:

When the gas evolved is passed through lime water it turns milky.

Reactions that take places

Vinegar(Acetic acid)+Baking soda(Sodium bicarbonate)⇒Carbon dioxide+Sodium acetate+Water(H₂O)

Carbon dioxide(CO₂)+Lime water[Ca(OH)₂]⇒Calcium carbonate(CaCO₃)+Water(H₂O)

Explanation:

Hope this helps:)

Answer 2

Answer:

1)The lime water turns milky

CH3COOH + NaHCO3 →CH3COONa+H2O+CO2↑

(acetic acid) (sodium bi. (sodium

carbonate). acetate)

CO2 + Ca(OH)2 → CaCO3 + H2O

( lime

water)

Explanation:

When vinegar react with sodium bicarbonate it results in formation of sodium acetate,water & evolution of CO2 gas.This CO2 evolution is the reason for hissing sound and bubble formation.

When this CO2 is passed through lime water , this turns lime water to milky in color.This is due to the formation of CaCO3.