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Standard X

Chemistry

Reaction of Metals with Dil. Sulphuric Acid

Write the bal...

Question

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.

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Solution

(a) $M g C O_{3} + H_{2} S O_{4} ⟶ M g S O_{4} + H_{2} O + C O_{2}$

(b) $P b (N O_{3})_{2} + H_{2} S O_{4} ⟶ P b S O_{4} + 2 H N O_{3}$

(c) $P b (N O_{3})_{2} + N a_{2} C O_{3} ⟶ P b C O_{3} + 2 N a N O_{3}$

(d) $Z n + H_{2} S O_{4} ⟶ Z n S O_{4} + H_{2}$

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Similar questions

Q. An oxide of lead changes to another insoluble oxide and soluble salt on reaction with

H N O_{3}

(a) What is Oxide ?.
(b) What is insoluble oxide ?.
(c) What is soluble salt ?.

For each of the salt: A, B, C and D, suggest a suitable method for its preparation.

(a) A is a sodium salt.

(b) B is an insoluble salt.

(d) D is a soluble salt of zinc.

The following is a list of methods for the preparation of salts.

A - direct combination of two elements.

B - reaction of a dilute acid with a metal.

C - reaction of a dilute acid with an insoluble base.

D - titration of a dilute acid with a solution of soluble base.

E - reaction of two solutions of salts to form a precipitate.

Choose from the above list A to E, the best method of preparing the following salts by giving a suitable equation in each case :

1. Anhydrous ferric chloride, 2. Lead chloride,

3. Sodium sulphate, 4. Copper sulphate.

Give a balanced equation for conversion of - a] an ammonium salt to a basic b] a soluble lead salt to an insoluble lead salt – formed as a white precipitate.

Name :

(a) a chloride which is insoluble in cold water but dissolves in hot water,

(b) a chloride which is insoluble,

(d) a basic salt,

(e) an acidic salt,

(f) a mixed salt,

(g) a complex salt,

(h) a double salt,

(i) a salt whose solubility increases with temperature,

(j) a salt whose solubility decreases with temperature.

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Reaction of Metals with Dil. Sulphuric Acid

Standard X Chemistry

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(a) MgCO3+H2SO4⟶MgSO4+H2O+CO2 (b) Pb(NO3)2+H2SO4⟶PbSO4+2HNO3 (c) Pb(NO3)2+Na2CO3⟶PbCO3+2NaNO3 (d) Zn+H2SO4⟶ZnSO4+H2

(a) $M g C O_{3} + H_{2} S O_{4} ⟶ M g S O_{4} + H_{2} O + C O_{2}$

(b) $P b (N O_{3})_{2} + H_{2} S O_{4} ⟶ P b S O_{4} + 2 H N O_{3}$

(c) $P b (N O_{3})_{2} + N a_{2} C O_{3} ⟶ P b C O_{3} + 2 N a N O_{3}$

(d) $Z n + H_{2} S O_{4} ⟶ Z n S O_{4} + H_{2}$