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Question
Write a fully balanced of the following case :
Red lead is warmed with concentrated hydrochloric acid.
Solution
\[\ce{\underset{\text{Trilead tetroxide(Red)}}{Pb3O4} + 8HCl -> \underset{\text{Lead chloride}}{3PbCl2(aq)} + 4H2O + Cl2 ^}\]
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RELATED QUESTIONS
State your observations when Dilute Hydrochloric acid is added to Copper carbonate
Name the gas that is produced in the given cases :
An action of dilute hydrochloride acid on sodium sulphide.
Explain why anhydrous \[\ce{HCl}\] is a poor conductor while aqueous \[\ce{HCl}\] is an excellent conductor.
Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.
Convert two soluble metallic nitrates to insoluble metallic chlorides using \[\ce{dil. HCl}\].
Name the following:
Drying agent used to dry hydrogen chloride.
Name the following:
Gas obtained by treating ferrous sulphide with 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
Identify the salts P and Q from the observation given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When NH4OH soltion is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
