Chemistry
Write balanced chemical equations for the following:
(a) Reaction of silver nitrate solution and sodium chloride solution.
(b) Lead nitrate solution is added to sodium chloride solution.
(c) State what happens to the crystals of washing soda when they are exposed to air. Name the phenomenon exhibited.
Acids Bases Salts
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Answer
(a) AgNO3 + NaCl ⟶ NaNO3 + AgCl ↓
(b) Pb(NO3)2 + 2NaCl ⟶ PbCl2 ↓ + 2NaNO3
(c) When crystals of washing soda are exposed to air, it loses its water of crystallisation and the phenomenon is known as Efflorescence.
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Related Questions
Choosing the substances from the list given:
dil. Sulphuric acid, Copper, Iron, Sodium, Copper (II) carbonate, Sodium carbonate, Sodium chloride, Zinc nitrate
Write balanced equations for the reactions which would be used in the laboratory to obtain the following salts:
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- Zinc carbonate
- Copper (II) sulphate
- Iron (II) sulphate.
You are given three solutions A, B and C. A is a strong acid, B is a weak acid and C is a strong alkali.
(a) Which solution contains solute molecules in addition to water molecules ?
(b) Which solution gives gelatinous white precipitate with zinc sulphate which disappears in excess solution ?
Give a balanced equation for the preparation of the following salts:
(a) Copper [II] sulphate from copper [II] oxide.
(b) Iron [III] chloride from the metal iron.
(c) Lead sulphate from lead carbonate.
(d) Potassium sulphate from KOH solution.
(e) Lead [II] chloride from lead carbonate [give two equations].
(f) Sodium sulphate — using dilute sulphuric acid.
(g) Copper chloride — using copper carbonate.
Write the balanced equations for the preparation of the following compounds (as the major product) starting from iron and using only one other substance :
(a) Iron (II) chloride
(b) Iron (III) chloride
(c) Iron (II) sulphate
(d) Iron (II) sulphide