Chemistry
Write the balanced equations for the preparation of the following salts in the laboratory.
(a) A soluble sulphate by the action of an acid on an insoluble base,
(b) An insoluble salt by the action of an acid on another salt,
(c) An insoluble base by the action of a soluble base on a soluble salt,
(d) A soluble sulphate by the action of an acid on a metal.
Acids Bases Salts
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Answer
(a) CuO + H2SO4 ⟶ CuSO4 + H2O
(b) AgNO3 + HCl ⟶ AgCl ↓ + HNO3
(c) FeCl3 + 3NaOH [base] ⟶ 3NaCl + Fe(OH)3 ↓
(d) Zn + H2SO4 ⟶ ZnSO4 + H2↑
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Related Questions
Classify the following solutions as acids, bases or salts.
Ammonium hydroxide, barium chloride, sodium chloride, sodium hydroxide, H2SO4 and HNO3
Complete the following table and write one equation for each to justify the statement:
Reactants Products Method Soluble base + Acid (dil) Salt + water Neutralisation
TitrationMetal + Non-metal Salt (soluble/insoluble) …………… Insoluble base + …………… Salt (soluble) + water …………… Active metal + Acid (dil) …………… + …………… …………… Soluble salt solution (A) + Soluble salt solution (B) Precipitated salt + soluble salt …………… Carbonate/bicarbonate + Acid (dil) Salt + …………… + …………… Decomposition of carbonate Chlorides/nitrates + Acid (conc.) …………… + …………… Decomposition of chlorides and nitrates. You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCl, Fe, H2SO4, Cl2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare :
(a) iron (III) chloride
(b) sodium sulphate
(c) sodium zincate
(d) iron (II) sulphate
(e) sodium chloride
For each of the salt : A, B, C and D, suggest a suitable method of it's preparation.
(a) A is a sodium salt,
(b) B is an insoluble salt,
(c) C is a soluble salt of copper
(d) D is a soluble salt of zinc.