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CO2 turns lime water milky, due to the f...

`CO_2` turns lime water milky, due to the formation of

A

`Ca(HCO_3)_2`

B

`CaCO_3`

C

`Ca(OH)_2`

D

`CaO`

Text Solution

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The correct Answer is:
To solve the question "CO₂ turns lime water milky, due to the formation of...", we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Lime Water**: - Lime water is an aqueous solution of calcium hydroxide (Ca(OH)₂). It is commonly used in various chemical tests. 2. **Reaction of CO₂ with Lime Water**: - When carbon dioxide (CO₂) is bubbled through lime water, it reacts with calcium hydroxide. 3. **Chemical Reaction**: - The reaction can be represented as: \[ \text{Ca(OH)}_2 (aq) + \text{CO}_2 (g) \rightarrow \text{CaCO}_3 (s) + \text{H}_2\text{O} (l) \] - In this reaction, calcium hydroxide reacts with carbon dioxide to form calcium carbonate (CaCO₃) and water (H₂O). 4. **Formation of Calcium Carbonate**: - Calcium carbonate (CaCO₃) is a white precipitate that is insoluble in water. This precipitate is responsible for the milky appearance of the lime water. 5. **Conclusion**: - Therefore, the reason CO₂ turns lime water milky is due to the formation of calcium carbonate (CaCO₃). ### Final Answer: CO₂ turns lime water milky due to the formation of calcium carbonate (CaCO₃). ---
To solve the question "CO₂ turns lime water milky, due to the formation of...", we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Lime Water**: - Lime water is an aqueous solution of calcium hydroxide (Ca(OH)₂). It is commonly used in various chemical tests. 2. **Reaction of CO₂ with Lime Water**: ...
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A compound 'X' is bitter to taste. It is a compound of washing powder and reacts with dilute HCl to produce brisk effervescence due to a colourless and odourless gas 'Y' which turns lime water milky due to the formation of 'Z' when excess of CO_2 is passed, milkiness disappears due to formation of 'P'. Identify 'X' , 'Y' , 'Z' and 'P' . Write the equations involved in the formation of Y, Z and P .

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Knowledge Check

  • An element X, in which the difference in electrons present in valence shell and penultimate shell is equal to the number of electrons present in the first shell, undergoes combustion to produce Y. Y turns lime water milky due to the formation of Z. Identify X, Y and Z.

    A
    `C, CO_2, CaCO_3`
    B
    `S, SO_2, CaSO_3`
    C
    `S, SO_2 , Ca(HSO_3)_2`
    D
    `C, CO_2, Ca(HCO_3)_2`

  • An element X, in which the difference in electrons present in valence shell (M shell) and penultimate shell is equal to the number of electrons present in the first shell, undergoes combustion to produce Y. Y turns lime water milky due to the formation of Z. Identify X, Y and Z.

    A
    `C, CO_2, CaCO_3`
    B
    `S, SO_2, CaSO_3`
    C
    `S, SO_2 , Ca(HSO_3)_2`
    D
    `C, CO_2, Ca(HCO_3)_2`

  • When air is blown from mouth into a test - tube containing lime water, the lime water turned milky due to the presence of

    A
    oxygen
    B
    carbon dioxide
    C
    nitrogen
    D
    water vapour

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