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प्रश्न
Name the following:
Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celcius.
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उत्तर
Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree Celsius is sodium hydrogen sulphate.
\[\ce{\underset{\text{Sodium chloride}}{NaCl} +\underset{\text{Sulphuric Acid(Conc.)}}{H2SO4} ->[<200°C] \underset{\text{Sodium hydrogen sulphate}}{NaHSO4} + \underset{\text{Hydrogen gas}}{HCl}}\]
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संबंधित प्रश्न
Dry hydrogen chloride gas can be collected by ______ displacement of air.
Explain why anhydrous HCl is a poor conductor while aqueous HCl is an excellent conductor.
What would happen if
Calcium oxide is used to dry hydrogen chloride.
What is the function of HCI in preparation of aqua-regia?
A solution of hydrogen chloride in water is prepared. The following substances are added to separate portions of the solution:
| S. No. | Substances added | Gas evolved | Odour |
| 1. | Calcium carbonate | _________ | _________ |
| 2. | Magnesium ribbon | _________ | _________ |
| 3. | Manganese (IV) oxide with heating | _________ | _________ |
| 4. | Sodium sulphide | _________ | _________ |
Complete the table by writing the gas evolved in each case and its odour.
Match the following:
| Column A | Column B |
| 1. A substance that turns moist starch iodide paper blue. | A. Ammonium sulphate |
| 2. A compound which release a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. | B. Lead carbonate |
| 3. A solution of this compound gives dirty green precipitate with sodium hydroxide. | C. Chlorine |
| 4. A compound which on heating with sodium hydroxide produces a gas which forms dense white fumes with hydrogen chloride. | D. Copper nitrate |
| 5. A white solid which gives a yellow residue on heating | E. Ferrous sulphate |
Identify the salts P and Q from the observation given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When NH4OH soltion is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Iron (II) sulphide
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
