Chemistry
From the following list of substances choose those which meet the description given below.
- Ammonium chloride
- Ammonium nitrate
- Chlorine
- Dilute hydrochloric acid
- Iron
- Lead nitrate
- Manganese (IV) oxide
- Silver nitrate
- Sodium nitrate
- Sodium nitrite
- Sulphur
Two compounds whose aqueous solutions give white precipitates with dilute hydrochloric acid.
Practical Chemistry
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Answer
Silver nitrate and Lead nitrate.
HCl + AgNO3 ⟶ AgCl + HNO3
2HCl + Pb(NO3)2 ⟶ PbCl2 + 2HNO3
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Related Questions
Identify the following substances :
(a) An alkaline gas which gives dense white fumes with hydrogen chloride.
(b) The gas has an offensive smell like rotten eggs.
(c) A colourless gas which can be used as a bleaching agent.
Name :
(a) The gas which turns acidified potassium dichromate solution green.
(b) A gas which turns moist lead acetate paper silvery black
Use the information given in (a) to (h) to identify the substances P to W selecting your answers from the given list.
List Calcium Oxygen Copper (II) oxide Carbon Calcium hydroxide Copper (II) nitrate Lead (II) oxide Hydrogen chloride Chlorine Lead (II) nitrate Calcium oxide Ammonium chloride (a) P is a white solid. When heated produces white fumes (sublime).
(b) P and R on warming produce an alkaline gas.
(c) On adding water to T, heat is evolved and R is formed.
(d) Q burns brightly in air to form T.
(e) When S is heated, it gives off brown fumes and leaves a black residue of U.
(f) A solution of S is formed by warming U with dilute nitric acid.
(g) V is a gaseous non-metallic element that reacts with hydrogen to form W.
(h) A solution of W will neutralise the solution of R.
Copy and complete the following table which refers to the action of heat on some carbonates :
Carbonate Colour of residue on cooling Zinc carbonate Lead carbonate Copper carbonate