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A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at anode during electrolysis of brine is passed on dry Y, it gives a compound Z, used for disinfecting drinking water. Identity X, Y, G and Z?
Verified Answer
A metal carbonate X on reacting with an acid gives a gas which when pa...
X is CaCO3 (Calcium Carbonate)
Now, we know that metal carbonate reacts with acid to give metal salt, Carbon-dioxide and water.
Y is Ca(OH)2 (Calcium hydroxide)
Ca(OH)2 + CO2 -----> CaCO3 + H2O

G is Cl2 (Chlorine gas)
Cl2+ Ca(OH)2 -----> CaOCl2 +H2O
So, Z is CaOCl2 (Bleaching powder)
This question is part of UPSC exam. View all Class 10 courses
Most Upvoted Answer
A metal carbonate X on reacting with an acid gives a gas which when pa...
X: Metal Carbonate
The first component in the given question is the metal carbonate, which reacts with an acid to produce a gas.

Y: Solution
The second component is the solution Y, which is involved in the reaction with the gas obtained from the reaction of the metal carbonate with an acid.

G: Gas
The third component is the gas G, which is obtained at the anode during the electrolysis of brine, or saltwater.

Z: Compound
The final component is the compound Z, which is produced when gas G is passed through dry Y. This compound is used for disinfecting drinking water.

Reaction 1: Metal Carbonate + Acid -> Gas + Salt + Water
When a metal carbonate reacts with an acid, it produces a gas, salt, and water. The gas is released as a result of the chemical reaction.

Reaction 2: Gas + Solution Y -> Metal Carbonate + Salt + Water
When the gas produced in the first reaction is passed through solution Y, it causes the metal carbonate to reform, along with the production of salt and water.

Electrolysis of Brine: Anode and Cathode Reactions
During the electrolysis of brine, which is the electrolysis of saltwater, the anode and cathode reactions occur. At the anode, chlorine gas (G) is produced, while at the cathode, hydrogen gas and hydroxide ions are generated.

Passing Gas G through Dry Y
When gas G, which is chlorine gas obtained during the electrolysis of brine, is passed through dry Y, it reacts to produce compound Z. This compound is commonly used for disinfecting drinking water.

Overall, the metal carbonate X reacts with an acid to produce a gas. This gas, when passed through solution Y, causes the metal carbonate to reform. On the other hand, gas G obtained during the electrolysis of brine, when passed through dry Y, produces compound Z, which is used for disinfecting drinking water.
Community Answer
A metal carbonate X on reacting with an acid gives a gas which when pa...
X=calcium carbonate and carbon dioxide
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A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at anode during electrolysis of brine is passed on dry Y, it gives a compound Z, used for disinfecting drinking water. Identity X, Y, G and Z?
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