Thick white fumes are formed when glass rod dipped in NH4 OHis brought near the mouth of bottle full of HCl gas-

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Standard XII

Chemistry

Hydrogen Peroxide

Thick white f...

Question

Thick white fumes are formed when glass rod dipped in NH₄OHis brought near the mouth of bottle full of HCl gas?

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Solution

When ammonium hydroxide (NH₄OH) reacts with hydrochloric acid (HCl), white colour fumes of ammonium chloride (NH₄Cl)
is formed. Reaction involved is
NH₄OH + HCl $\to$ NH₄Cl + H₂O.
HCl gas is evolved when a salt containing chloride ion is treated with concentrated sulphuric acid.
so this can be confirmed by dipping a rod in ammonium hydroxide and brought near to the mouth of test tube. and white dense fumes are observed.

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Q. Explain the following: [5 MARKS]
(a) Thick white fumes are formed when a glass rod dipped in

N H_{4} O H

is brought near the mouth of a bottle full of HCl gas.
(b) Dry Hydrogen chloride gas does not affect a dry strip of blue litmus but turns red in the presence of a drop of water.
(c) Hydrogen Chloride gas is not collected over water.

Which of the following is produced when a rod dipped in $N H_{4} O H$ is brought near the mouth of a bottle full of HCl gas?

Explain why :

(a) anhydrous HCl is a poor conductor while aqueous HCl is an excellent conductor.
(b) when the stopper of a bottle full of hydrogen chloride gas is opened there are fumes in the air.
(c) a solution of hydrogen chloride in water turns blue litmus red and conducts electricity, while a solution of the same gas in toluene :
(i) has no effect on litmus, and
(ii) does not conduct electricity.
(d) thick white fumes are formed when a glass rod dipped in $N H_{4} O H$ is brought near the mouth of a bottle full of HCl gas.
(e) dry hydrogen chloride gas does not affect a dry strip of blue litmus paper but it turns red in the presence of a drop of water.

(f) hydrogen chloride gas is not collected over water.

Q. When

B e C l_{2}

is hydrolysed, white fumes of gas are given out. The intensity of fumes intensifies when a rod dipped in moist ammonia is brought near the mouth of the test tube. The gas which comes out during hydrolysis is :

Q. Which of the following is an acidic gas which gives dense white fumes when the glass rod is dipped in ammonia solution and brought near it?

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Thick white fumes are formed when glass rod dipped in NH4 OHis brought near the mouth of bottle full of HCl gas?

Thick white fumes are formed when glass rod dipped in NH₄OHis brought near the mouth of bottle full of HCl gas?