Advertisements
Advertisements
Question
State your observations when Dilute Hydrochloric acid is added to Sodium thiosulphate.
Advertisements
Solution
Dil. HCl reacts with thiosulphates to produce sulphur dioxide and yellow sulphur is precipitated.
Na2S2O3 + 2HCl → 2NaCl + H2O + SO2 + S ↓
APPEARS IN
RELATED QUESTIONS
State your observation when dilute hydrochloric acid is added to a lead nitrate solution and the mixture is heated.
Write an equation for the reaction of hydrochloric acid on the silver nitrate solution.
Write an equation for the reaction of hydrochloric acid on copper oxide.
Name the following:
A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
State the use of aqua-regia.
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 |
Write observation:
Lead nitrate solution is mixed with dilute hydrochloric acid and heated.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
