Question

which acidic radical produce fruits smell MCQ opshan (1) ch3coo- (2) Bo- (3) co32- (4) po43​

Answer 1

The identification of the radicals is first done on the basis of the preliminary tests. The Dry heating test is one of the preliminary tests performed earlier which may give some important information about the acid radical present. The other preliminary tests are based on the fact that:

CO32-, S2-, NO2- and SO32- react with dil. H2SO4 to give out CO2, H2S, NO2 and SO2 gases respectively. These gases on identification indicate the nature of the anion present in the salt.

Cl-,Br-,I-,NO3- and C2O42- and CH3COO- react with conc. H2SO4 but not with dil. H2SO4 to produce characteristic gases.

SO42- and PO43- react neither with dil H2SO4 nor with conc. H2SO4. These are, therefore, identified by individual tests.

Thus, these anions may be identified by performing the following tests below:

1) Dil. H2SO4 Tests

Treat a pinch of the salt with dil. H2SO4 and identify the gas evolved.

Chemical Reactions Involved in Dil.H2SO4 Test:

Dilute H2SO4 decomposes carbonates, sulphides, sulphites and nitrites in cold to give gases. These gases on identification indicate the nature of the anion present in the salt.

Answer 2

Explanation:

1. ch 3coo. answer this thank