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Standard X
Chemistry
Iron Ion
Q). What do w...
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Q). What do we observe or write the observance of the following reactions:
b. a few pieces of iron are dropped in a blue solution of copper sulphate ?
c. silver nitrate is added to a solution of sodium chloride ?
d. ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.
e. solid lead nitrate is heated ?
f. when dilute sulphuric acid is added to barium chloride solution ?

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Solution

Dear student

Observations to your queries are listed below:

(b). Blue color turns into green color, due to the formation of ferrous sulfate
(c). The white precipitate of silver chloride is formed
(d). A dull green color precipitate of sodium sulfate is formed
(e). Brown fumes of NO2 is observed
(f). The insoluble white precipitate of barium sulfate is formed

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Q.

What do you observe when

(a) dilute sulphuric acid is added to granulated zinc ?

(b) a few pieces of iron are dropped in a blute solution of sodium chloride ?

(c) silver nitrate is added to a solution to a of sodium chloride ?

(d) ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.

(e) solid lead nitrate is heated ?

(f) when dilute sulphuric acid is added to barium chloride solution ?

Q. State your observations when:
(i) Dilute hydrochloric acid is added to lead nitrate solution and the mixture is heated.
(ii) Barium chloride solution is mixed with sodium sulphate solution.
(iii) Concentrated sulphuric acid is added to sugar crystals.
(iv) Dilute hydrochloric acid is added to copper carbonate.
(v) Dilute hydrochloric acid is added to sodium thiosulphate.
Q.

What do you observe when

(a) Lead nitrate is heated.

(b) Chlorine water is exposed to sunlight.

(c) Hydrogen peroxide is exposed to sunlight.

(d) H2S gas is passed through copper sulphate solution.

(e) Barium chloride is added to sodium sulphate solution.


Q. The questions (i) to (v) refer to the following salt solutions listed (a) to (f):
(a) Copper nitrate
(b) Iron (II) sulphate
(c) Iron (III) chloride
(d) Lead nitrate
(e) Magnesium sulphate
(f) Zinc chloride

(i) Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution?
(ii) Which two solution will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
(iii) Which solution will give a white precipitate when either dilute hydrochloric acid or dilute sulphuric acid is added to it?
(iv) Which solution becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it?
(v) Which solution gives a white precipitate with excess ammonium hydroxide solution?
Q. State what you observe when:
(i) Neutral litmus solution is added to alkaline solution.
(ii) Ammonium hydroxide is added to iron (III) sulphate solution.
(iii) Lead nitrate and sodium chloride are mixed.
(iv) Ethane is bubbled through a solution of bromine in tetrachloromethane (carbon tetrachloride).
(v) Sulphur burns.
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