Chemistry
A solution of hydrogen chloride in water is prepared.
The following substances are added to the solution taken in different test tubes
| 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 case and it's odour.
Related Questions
Assertion (A): Few drops of dilute hydrochloric acid is added to a solution of iron sulphide, a colourless gas is formed with a rotten egg odour.
Reason (R): The gas formed does not turn moist lead acetate paper silvery black.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Fill in the blank from the choices in the bracket :
(a) Quicklime is not used to dry HCl gas because CaO is …………… [alkaline/acidic/neutral]
(b) When sodium chloride is heated with concentrated sulphuric acid below 200°C, one of the product formed is …………… (sodium hydrogen sulphate / sodium sulphate / chlorine).
Name :
(a) a black metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(b) two colourless gases, which when mixed produce a white solid
(c) two gases which chemically combine to form a liquid.
(d) a chloride which is soluble in excess of ammonium hydroxide.
(e) the chemical in which gold can be dissolved.
(f) the experiment which demonstrates that hydrogen chloride is soluble in water.
(g) the gas produced when chlorine water is exposed to sunlight.
(h) the acid which on mixing with silver nitrate solution produces a white precipitate which is soluble in excess of ammonium hydroxide.
(i) the gas which produces dense white fumes with ammonia gas.
(j) an element which reacts with hydrogen to form compound which is strongly acidic in water.
Match the following reactions in column A with the gas evolved in column B :
Column A Column B (a) Potassium sulphite is treated with dilute hydrochloric acid. A. Cl2 (b) Concentrated hydrochloric acid is made to react with manganese dioxide. B. H2S (c) Iron sulphide reacts with dil. HCl C. SO2 (d) Calcium carbonate is added to dil. HCl D. CO2