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प्रश्न
Give the reaction of acid with chlorides. State the conditions under which they react.
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उत्तर
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.
\[\ce{NaCl + H2SO4(conc.) ->[below 200^\circ C] NaHSO4 + HCl\uparrow}\]
\[\ce{2NaCl + H2SO4 ->[above 200°C] Na2SO5 + 2HCl}\]
संबंधित प्रश्न
Give the names and formulae of two strong acids and two weak acids.
One of the following is not an organic acid. This is:
(a) ethanoic acid
(b) formic acid
(c) citric acid
(d) carbonic acid
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
What happens to temperature of the solution, when an acid is neutralised?
Water is never added to acid in order to dilute it why?
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 |
What is the difference between : An alkali and a metal hydroxide?
Choose the correct answer from the options given below
Which of them occurs in solid state?
Hydrochloric Acid reacts with metal bicarbonates to give ______.
Curd contains ______ acid.
