Table of Contents
- 1 Why is the aqueous solution of sodium extract alkaline?
- 2 Why is sodium acetate alkaline?
- 3 Why is sodium extract boiled with HNO3?
- 4 Why is sodium extract boiled with conc nitric acid before testing the halogens?
- 5 Why are some salts acidic when others are neutral?
- 6 Is an aqueous solution of CH3COONa acidic basic or neutral?
- 7 Why sodium extract is prepared for testing the element of organic compound?
- 8 Why it is necessary to boil the sodium extract with HNO3 before the test of halogen?
Why is the aqueous solution of sodium extract alkaline?
sodium extract is unary alkaline because the organic compound is fused with sodium metal and then it is extracted with water the unreacted metal react with water and form an alkaline solution. due to the formation of sodium hydroxide the sodium extract becomes alkaline in nature.
Why is sodium acetate alkaline?
Sodium acetate is a basic salt; the acetate ion is capable of deprotonating water, thereby raising the solution’s pH. The conjugate acid of the weak base makes the salt acidic.
What is the purpose of preparing sodium extract?
For the confirmatory analysis of acidic radicals we use the soda extract or sodium carbonate extract. It is prepared when the given inorganic compound is insoluble in water.
Why is sodium extract boiled with HNO3?
It is boiled with concentrated nitric acid to decompose any sodium cyanide or sodium sulphide present in the compound containing nitrogen or sulphur also. Cyanide, sulphide and halide of sodium so formed in sodium fusion are extracted from the fused mass by boiling it with distilled water.
Why is sodium extract boiled with conc nitric acid before testing the halogens?
Sodium extract is heated with concentrated HNO3 before testing for. halogens because: (a) Ag2S and AgCN are soluble in acidic medium. (b) Silver halides are totally insoluble in nitric acid.
When lead acetate is added to acidified sodium extract of an organic compound black Colour is obtained which confirms the presence of?
When acidified sodium extract of organic compound is treated with acetic cid and lead acetate, blacke precipitate is obtained. This suggests that the organic compund contains. The formation of balcke precipitate indicates the presence of sulphur in an organic compound.
Why are some salts acidic when others are neutral?
If the salt is the result or product of a strong acid and a strong base, then the salt will be neutral. If the salt is the result or product of a strong acid and a weak base, then the salt will be acidic.
Is an aqueous solution of CH3COONa acidic basic or neutral?
Sodium acetate is therefore basic in an aqueous medium. Acetate ion undergoes hydrolysis and the resulting solution is slightly basic due to excess of $O{{H}^{-}}$ ions.
Why do we prepare sodium extract in organic analysis?
In order to detect them, the elements need to be converted into their ionic forms. This is done by fusing the organic compound with sodium metal. The ionic compounds formed during the fusion are extracted in aqueous solution and can be detected by simple chemical tests.
Why sodium extract is prepared for testing the element of organic compound?
The halogen, Nitrogen and Sulfur are covalently bonded to the organic compound and in order to detect them the element first need to converted into ionic form and this is extracted in the aqueous solution and further easily be detected by simple chemical test and the extract is called sodium fusion extract or …
Why it is necessary to boil the sodium extract with HNO3 before the test of halogen?
Why Dil HNO3 is added to the sodium extract before detection of halogens in organic compound?
Nitric acid decomposes sodium cyanide and sodium halide. else, they precipitate in test and misguide the result. Therefore, dilute nitric acid is added before testing halogens to expel all the gases if evolved.