Advertisements
Advertisements
प्रश्न
Name the following:
A chemical in which gold can be dissolved.
Advertisements
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
Write an equation for the reaction of hydrochloric acid on caustic soda solution.
State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.
Name the following:
Drying agent used to dry hydrogen chloride.
State the use of aqua-regia.
Write a fully balanced of the following case :
Magnesium metal is treated with dilute hydrochloric acid.
Identify the anion present of the following compound:
When barium chloride solution is added to salt solution E a white precipitate insoluble in dilute hydrochloric acid is obtained
Write an equation for the reactions of hydrochloric acid on manganese (IV) oxide.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
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.
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D, and E.
