Chemistry
Write the observation:
(a) Lead nitrate solution is mixed with dilute hydrochloric acid and heated.
(b) A small piece of zinc is added to dilute hydrochloric acid.
Hydrogen Chloride
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Answer
(a) White precipitate of PbCl2 is formed which is soluble in hot water.
Pb(NO3)2 + 2HCl ⟶ PbCl2 ↓ + 2HNO3
(b) Hydrogen gas is evolved with bubbles and it burns with a pop sound
Zn + 2HCl ⟶ ZnCl2 + H2 ↑
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