Advertisements
Advertisements
प्रश्न
Name the following:
A chemical in which gold can be dissolved.
उत्तर
Gold can be dissolved in aqua regia which is mixture of three parts of conoentrated hydrochloric acid and one part of concentrated nitric acid.
APPEARS IN
संबंधित प्रश्न
Potassium sulfite on reacting with hydrochloric acid releases _______ gas. (Cl2, SO2, H2S)
Write an equation for the reaction of aqueous hydrochloric acid on lead nitrate solution.
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
Name the following:
Gas obtained by treating ferrous sulphide with hydrochloric acid.
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Sodium hydrogen carbonate
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.
Write an equation for the reactions of hydrochloric acid on manganese (IV) oxide.
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.
