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प्रश्न
Give a chemical test to distinguish between the following pair of compounds:
Hydrogen chloride gas and hydrogen sulphide gas
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उत्तर
When exposed to hydrogen sulphide gas, lead acetate paper that is moist turns black; when exposed to hydrogen chloride gas, it remains colourless.
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संबंधित प्रश्न
Write balanced chemical equations to show The behavior of H2SO4 as an acid when it reacts with Magnesium
Write an equation for the reaction of hydrochloric acid on magnesium foil.
Write an equation for the reaction of aqueous hydrochloric acid on lead nitrate solution.
Write an equation for the reaction of hydrochloric acid on copper oxide.
Give reason for the following:
An aqueous solution of chlorine in acidic in nature
Hint : Cl2 + H2O ⟶ HCl +HClO
Name the following:
Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celcius.
State the use of aqua-regia.
Write a fully balanced of the following case :
Red lead is warmed with concentrated hydrochloric acid.
Select from the list given (a to e) one substances in each case which matches the description given in parts (i) to (v). (Note : Each substance is used only one in the answer)
(a) Nitroso Iron (II) Sulphate
(b) Iron (III) chloride
(c) Chromium sulphate
(d) Lead (II) chloride
(e) Sodium chloride
(i) A compound which is deliquescent
(ii) A compound which is insoluble in cold water, but soluble in hot water
(iii) The compound responsible for the brown ring during the brown ring test of nitrate iron
(iv) A compound whose aqueous solution is neutral in nature
(v) The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
