Advertisements
Advertisements
प्रश्न
In the Solvay process, can we obtain sodium carbonate directly by treating the solution containing (NH4)2CO3 with sodium chloride? Explain.
उत्तर
No. In Solvay process, ammonium hydrogen carbonate is prepared from ammonium carbonate, which then reacts with sodium chloride to form sodium hydrogen carbonate. Due to low solubility of NaHCO3, it gets precipitated and decomposes on heating to give Na2CO3.
We cannot obtain sodium carbonate directly by treating the solution containing (NH4)2CO3 with sodium chloride as both the products formed on reaction, i.e., Na2CO3 and NH4C1 are soluble and the equilibrium will not shift in forward direction.
\[\ce{(NH4)2CO3 + 2NaCl ⇌ Na2CO3 + 2NH4Cl}\]
APPEARS IN
संबंधित प्रश्न
Starting with sodium chloride how would you proceed to prepare sodium metal.
What happens when sodium metal is dropped in water?
State as to why a solution of Na2CO3 is alkaline?
Write a balanced equation for the reaction between Na2O2 and water.
Amphoteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide?
A chemical A is used for the preparation of washing soda to recover ammonia. When CO2 is bubbled through an aqueous solution of A, the solution turns milky. It is used in whitewashing due to disinfectant nature. What is the chemical formula of A?
When Zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with which of the following ion(s)?
(i) H+ ions
(ii) Mg2+ ions
(iii) Ca2+ ions
(iv) \[\ce{SO^{2-}4}\] ions
Complete the following reactions.
\[\ce{O^{2-}2 + H2O ->}\]
Match the compounds given in Column I with their uses mentioned in Column II.
| Column I | Column II |
| (i) CaCO3 | (a) Dentistry, ornamental work |
| (ii) Ca(OH)2 | (b) Manufacture of sodium carbonate from caustic soda |
| (iii) CaO | (c) Most negative E value among alkali O metals. |
| (iv) CaSO4 | (c) Manufacture of high-quality paper |
| (d) Used in white washing |
The pair of compounds which cannot exist together in solution is ______.
