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Salts

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Question

From the formula listed below, choose one, in each case, corresponding to the salt having the given description: $A g C l,$ $C u C O_{3}$ , $C u S O_{4} .$ $5 H_{2} O,$ $K N O_{3},$ $N a C l,$ $N a H S O_{4},$ $P b (N O_{3})_{2},$ $Z n C O_{3},$ $Z n S O_{4} .$ $7 H_{2} O .$
(b) an insoluble chloride

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Solution

Silver chloride $(A g C l)$ is an insoluble chloride among the given compounds. Hence, It forms a white precipitate in water.

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Q. From the formulae listed below, choose, one, corresponding to the salt having the given description:
AgCl, CuCO₃, CuSO₄.5H₂O, KNO₃, NaCl, NaHSO₄, Pb(NO₃)₂, ZnCO₃, ZnSO₄.7H₂O. On heating this, salt changes from green to black.

From the formula listed below, choose one, in each case, corresponding to the salt having the given description:-

$A g C l, C u C O_{3}, C u S O_{4} .5 H_{2} O, K N O_{3}, N a C l, N a H S O_{4}, P b (N O_{3})_{2} . Z n C O_{3}, Z n C O_{4} .7 H_{2} O .$

(a) an acid salt.

(b) an insoluble chloride.

(c) on treating with concentrated sulphuric acid, this salt changes from blue to white.

(d) on heating, this salt changes from green to black.

(e) this salt given nitrogen dioxide on heating.

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 formula listed below, choose one, in each case, corresponding to the salt having the given description:

A g C l

{C u C O}_{3}, {C u S O}_{4} \cdot 5 H_{2} O, {K N O}_{3}, N a C l

{N a H S O}_{4}, P b {({N O}_{3})}_{2}, {Z n C O}_{3}

{Z n S O}_{4} .7 H_{2} O

Q. From the formula listed below, choose one, in each case, corresponding to the salt having the given description:

A g C l,

C u C O_{3},

C u S O_{4} .

5 H_{2} O,

K N O_{3},

N a C l,

N a H S O_{4},

P b (N O_{3})_{2},

Z n C O_{3},

Z n S O_{4} .

7 H_{2} O .

(d) on heating, this salt changes from green to black

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