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Strength of Acids and Bases

Choosing only...

Question

Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain:
Iron (II) sulphate

Dilute sulphuric acid Copper Copper carbonate
Iron Sodium carbonate
Sodium
Zinc

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Solution

Iron (II) sulphate can be prepared by reacting the iron metal with sulphuric acid. This is a reaction of metal with acid which also liberates hydrogen gas.
$F e + H_{2} {S O}_{4} (d i l) \to {F e S O}_{4} + H_{2}$

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Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain :

(a) Sodium sulphate, (b) Copper sulphate,

(c) Iron (II) sulphate, (d) Zinc carbonate,

$\begin{matrix} Dilute sulphric acid & C o p p e r & C o p p e r c a r b o n a t e Iron & S o d i u m C a r b o n a t e Sodium Zinc \end{matrix}$

Q. (a) Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain:
(i) Sodium sulphate
(ii) Copper sulphate
(iii) Iron (II) sulphate
(iv) Zinc carbonate

Dilute sulphuric acid

Copper
Iron
Sodium, Zinc

Copper carbonate
Sodium carbonate

(b) From the formulae listed below, choose one, in each case, corresponding to the salt having the given description:
AgCl, CuCO₃, CuSO₄·5H₂O, KNO₃, NaCl, NaHSO₄, Pb(NO₃)₂, ZnCO₃, ZnSO₄·7H₂O.
(i) An acid salt.
(ii) An insoluble chloride.
(iii) On treating with concentrated sulphuric acid, this salt changes from blue to white.
(iv) On heating this salt changes from green to black.
(v) This salt gives nitrogen dioxide on heating.

Q. From the list of the substances given, name the substances which you would use to prepare each of the following salts:
List of substances: copper, lead, sodium, zinc, copper oxide, lead carbonate, sodium carbonate solution, dilute hydrochloric acid, dilute nitric acid and dilute sulphuric acid.
Salts: (a) zinc sulphate (b) copper sulphate (c) sodium sulphate (d) lead sulphate.

Q. Write equations for the laboratory preparation of the following salts, using sulphuric acid:
(i) iron (II) sulphate from the iron.
(ii) copper sulphate from copper.
(iii) lead sulphate from lead nitrate.
(iv) sodium sulphate from sodium carbonate.

Q. Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain:
Copper sulphate

Dilute sulphuric acid Copper Copper carbonate
Iron Sodium carbonate
Sodium
Zinc

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Strength of Acids and Bases

Standard X Chemistry

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