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प्रश्न
What happens when sodium metal is dropped in water?
उत्तर
When Na metal is dropped in water, it reacts violently to form sodium hydroxide and hydrogen gas. The chemical equation involved in the reaction is:
\[\ce{2Na_{(s)} + 2H_2O_{(l)} -> 2NaOH_{(aq)} + H_{2(g)}}\]
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संबंधित प्रश्न
Find the oxidation state of sodium in Na2O2.
Discuss the various reactions that occur in the Solvay process.
Potassium carbonate cannot be prepared by Solvay process. Why?
Starting with sodium chloride how would you proceed to prepare sodium metal.
What happens when sodium metal is heated in the free supply of air?
State as to why a solution of Na2CO3 is alkaline?
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
Complete the following reactions.
\[\ce{O^{2-}2 + H2O ->}\]
Complete the following reactions.
\[\ce{O^{-}2 + H2O ->}\]
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 |
Amongst baking soda, caustic soda and washing soda, carbonate anion is present in ______.
The pair of compounds which cannot exist together in solution is ______.
