Advertisements
Advertisements
प्रश्न
Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.
Advertisements
उत्तर
Distillation slowly increases the strength of a weak hydrochloric acid solution until it has 22.2% HCl by weight and boils at 110°C. Once this level is reached, boiling cannot be used to make the acid stronger anymore. When this concentration is attained, boiling [constant boiling mixture or azeotrope] cannot be used to enhance the acid concentration any further.
Water and HCl are the main components of vapours that form before 110°C, although HCl molecules make up the majority of vapours that form above this temperature.
संबंधित प्रश्न
State one relevant observation for the following
When hydrogen sulfide gas is passed through lead acetate solution.
Give reason for the following:
An aqueous solution of chlorine in acidic in nature
Hint : Cl2 + H2O ⟶ HCl +HClO
How will the action of dilute hydrochloric acid enable you to distinguish between sodium thiosulphate and sodium sulphite?
Name the following:
Drying agent used to dry hydrogen chloride.
Name the following:
Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celcius.
Name the following:
Gas obtained by treating ferrous sulphide with hydrochloric acid.
What is the function of HCI in preparation of aqua-regia?
Fill in the blank:
On addition of silver nitrate to hydrochloric acid ___________ precipitate is formed which is soluble in ____________
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
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
