Advertisements
Advertisements
प्रश्न
State as to why a solution of Na2CO3 is alkaline?
Advertisements
उत्तर
When sodium carbonate is added to water, it hydrolyses to give sodium bicarbonate and sodium hydroxide (a strong base). As a result, the solution becomes alkaline.
\[\ce{Na_2CO_3 + H_2O -> NaHCO_3 + NaOH}\]
संबंधित प्रश्न
Find the oxidation state of sodium in Na2O2.
Discuss the various reactions that occur in the Solvay process.
Starting with sodium chloride how would you proceed to prepare sodium metal.
Describe two important uses of the following sodium carbonate.
What happens when sodium metal is heated in the free supply of air?
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?
The formula of soda ash is ______.
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
In the Solvay process, can we obtain sodium carbonate directly by treating the solution containing (NH4)2CO3 with sodium chloride? Explain.
Match the elements given in Column I with the colour they impart to the flame given in Column II.
| Column I | Column II |
| (i) Cs | (a) Apple green |
| (ii) Na | (b) Violet |
| (iii) K | (c) Brick red |
| (iv) Ca | (d) Yellow |
| (v) Sr | (e) Crimson red |
| vi) Ba | (f) Blue |
\[\ce{NaOH}\] is manufactured by the electrolysis of brine solution. The products of the reaction are ______.
Which of the following metal hydroxides does not dissolve in sodium hydroxide solution?
The pair of compounds which cannot exist together in solution is ______.
Which sodium salt will be heated with soda lime to obtain propane?
