A metal carbonates 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. Identify X, Y G and Z.

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A metal carbonates 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. Identify X, Y G and Z.

Rifat Afreen · Accepted Answer

Let&#8217;s break down the question step by step to identify the substances X, Y, G, and Z:
1. Substance X: This is a metal carbonate that reacts with an acid to produce a gas. The gas produced is likely carbon dioxide (CO₂), which is a common product when carbonates react with acids. A common example of metal carbonate is calcium carbonate (CaCO₃).
2. Substance Y: The solution that gives back the carbonate when the gas (CO₂) is passed through it is likely a solution of calcium hydroxide (Ca(OH)₂), also known as limewater. When CO₂ is bubbled through limewater, it forms calcium carbonate again, which is a precipitate.
3. Substance G: The gas obtained at the anode during the electrolysis of brine (saltwater) is chlorine gas (Cl₂).
4. Substance Z: When chlorine gas is passed over dry calcium hydroxide (solution Y), it forms calcium hypochlorite (Ca(OCl)₂), which is used for disinfecting drinking water.
In summary:
&#8211; X: Calcium Carbonate (CaCO₃)
&#8211; Y: Calcium Hydroxide (Ca(OH)₂)
&#8211; G: Chlorine (Cl₂)
&#8211; Z: Calcium Hypochlorite (Ca(OCl)₂)

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