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प्रश्न
Distinguish by a chemical test sodium chloride and sodium sulphide.
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उत्तर
When diluted sulphuric acid is added to sodium sulphide and heated, hydrogen sulphide gas is produced, which smells like rotten eggs and turns lead acetate paper black.
\[\ce{Na2S + H2SO4 -> H2S ^ + Na2SO4}\]
When concentrated sulphuric acid is exposed to sodium chloride and heated, HCl gas is produced, resulting in dense white vapours when a glass rod dipped in ammonia is brought near it.
\[\ce{NaCl + H2SO4 -> HCl ^ + NaHSO4}\]
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संबंधित प्रश्न
Name three chemicals made from common salt (or sodium chloride).
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pH equal to 7
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| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
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Name two carbonates which do not produce carbon dioxide on heating.
Name gases which has a sour taste.
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