Advertisements
Advertisements
Question
Give the reaction of acid with chlorides. State the conditions under which they react.
Advertisements
Solution
Chlorides react with concentrated sulphuric acid on warming to liberate hydrogen chloride.
The process requires two steps due to the presence of two replaceable hydrogen ions in H2SO4.
\[\ce{NaCl + H2SO4(conc.) ->[below 200^\circ C] NaHSO4 + HCl\uparrow}\]
\[\ce{2NaCl + H2SO4 ->[above 200°C] Na2SO5 + 2HCl}\]
RELATED QUESTIONS
Name one natural source of the following acids:
Citric acid
What happens to the H+ ions, of the solution, when an acid is neutralised?
What type of ions is formed:
when a base (or alkali) is dissolved in water?
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
Carbonic acid gives an acid salt but hydrochloric acid does not. Explain.
Acids are bitter in taste.
Two acids ‘A’ and ‘B’ are given. Acid A gives one hydrogen ion per molecule of the acid in solution. Acid B gives two hydrogen ions per molecule of the acid in solution.
- Find out acid A and acid B.
- Which acid is called the King of Chemicals?
State whether the following statement is true or false. Correct the false statement.
A compound if acidic will turn all indicators red.
Match the following:
| 1. | The hardest substance in our body | a. | Aluminum phosphate |
| 2. | Citrus fruits | b. | Potash alum |
| 3. | Rice plant | c. | Insoluble in water |
| 4. | Double salts | d. | Acidic soil |
| 5. | Silver chloride | e. | Calcium phosphate |
| f. | Alkaline soil |
Explain the following:
\[\ce{H3PO3}\] is not a tribasic acid.
