Q9 of 33 Page 223

Acetic acid is heated with Na2CO3 in a test tube. A colourless and odourless gas (X) is evolved. The gas turns lime water milky. Identify X.

When acetic acid (CH3COOH) is heated with Na2CO3 , the following reaction takes place:


i. In this reaction, when sodium carbonate comes in contact


with the gas released in the form of an effervescence, it turns


milky. This is chemical test for carbon dioxide gas.


ii. Hence, the gas (X) is carbon dioxide.


More from this chapter

All 33 →
7

IUPAC name of the first member of alkyne is ___________ . (ethene / ethyne)

 8

Out of ketonic and aldehydic group, which is the terminal functional group?

 10

Assertion: Denaturation of ethyl alcohol makes it unfit for drinking purpose.

Reason: Denaturation of ethyl alcohol is carried out by pyridine.


Check whether the reason is correct for assertion.


 1

Write down the possible isomers and give their IUPAC names using the formula C4H10.