When electricity is passed through a common salt solution, sodium hydroxide is produced along with the liberation of two gases ‘X’ and ‘Y’. The gas ‘X’ burns with a pop sound whereas ‘Y’ is used for disinfecting water.
Identify X and Y.
Give the chemical reaction for the reaction stated above.
State the reaction of Y with dry slaked lime.

Open in App

Solution

(i) 'X' and 'Y'
‘X’ is hydrogen gas $(H_{2})$ and ‘Y’ is Chlorine gas $({Cl}_{2})$ .
Hydrogen gas burns with a pop sound and chlorine gas are used for disinfecting water.
(ii) Electrolysis of aqueous sodium chloride solution.
Electrolysis of aqueous Sodium chloride $(NaCl)$ produces Sodium hydroxide $(NaOH)$ , hydrogen gas, and chlorine gas.
$2 NaCl (s) + 2 H_{2} O (l) \overset{Electric Current}{\to} 2 NaOH (aq) + H_{2} (g) + {Cl}_{2} (g)$
(iii) Chlorine gas reaction with slaked lime
Slaked lime $(Ca {(OH)}_{2})$ reacts with Chlorine gas $({Cl}_{2})$ to form Bleaching powder $({CaOCl}_{2})$ and water $(H_{2} O)$ .
$Ca {(OH)}_{2} (aq) + {Cl}_{2} (g) \to {CaOCl}_{2} (s) + H_{2} O (l)$

Suggest Corrections

Similar questions

Q. Hydrochloric acid reacts with a metal X to form a gas Y which burns with a 'pop' sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.
(a) Name X and Y
(b) Write the chemical equation of the reaction of metal X with (i) hydrochloric acid, and (ii) sodium hydroxide solution.

Q. When electricity is passed through a common salt solution sodium hydroxide is produced along with the liberation of two gases

X

and

Y

X

burns with a pop sound whereas

Y

is used for disinfecting drinking water.
(i) Identify

X

and

Y

(ii) Give the chemical equation for the reaction stated above
(iii) State the reaction of

Y

with dry slaked lime

Q. When an acid is treated with a basic salt which is used for baking purposes, it produces common salt along with water and a gas which turns lime water milky.
a) Write a balanced chemical equation for above reaction .
b) NAme two gases when electricity is passed throughan aqueous solution of salt produced in above reaction

During electrolysis of brine, a gas ‘G’ is liberated at the anode. When this gas ‘G’ is passed through slaked lime, a compound ‘C’ is formed, which is used for disinfecting drinking water.

(ii) State the chemical equation involved.

When egg shells are treated with vinegar, a colourless gas is formed. This gas when passed into slaked lime solution , it turned milky white.

a) Identify the gas formed.b) Write balanced chemical equation for its reaction with slaked lime solution.c) What change would be observed if the gas formed is passed through lime water for a long time?

Join BYJU'S Learning Program