a | Blue litmus | Turns red | Acetic acid is _________ in nature. |
b | Red litmus | Does not change colour | __________ gas in evolved when acetic acid reacts with sodium bicarbonate. |
4 | a. Reaction with sodium bicarbonate | a. Colourless and odourless gas bubbles are evolved | ___________ gas is evolved when acetic acid reacts with sodium bicarbonate. |
b. At first lime water turns milky, but if the gas is allowed to pass for some more time, the lime water becomes colourless again. |