Advertisements
Advertisements
प्रश्न
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
Advertisements
उत्तर
A gas (hydrogen) is evolved, which burns with a pop sound when exposed to air.
\[\ce{Zn + 2HCl -> ZnCl2 + H2 ^}\]
संबंधित प्रश्न
Potassium sulfite on reacting with hydrochloric acid releases _______ gas. (Cl2, SO2, H2S)
For the preparation of hydrochloric acid in the laboratory:
What arrangement is done to dissolve hydrogen chloride gas in water?
Explain why anhydrous HCl is a poor conductor while aqueous HCl is an excellent conductor.
Convert two soluble metallic nitrates to insoluble metallic chlorides using dil. HCl.
State which component is the oxidizing agent in aqua regia.
Name the following:
Gas obtained by treating ferrous sulphide with hydrochloric acid.
Name the following:
A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
Fill in the blank:
On addition of silver nitrate to hydrochloric acid ___________ precipitate is formed which is soluble in ____________
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.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
