Home
Class 12
CHEMISTRY
A compound X on heating gives a colourle...

A compound X on heating gives a colourless gas. The residue is dissolved in water to obtain Y. Excess `CO_(2)` is bubbled through aqueous solution Y and Z is formed. Z on gentle heating gives back X. The X is

A

`Na_(2)CO_(3)`

B

`K_(2)CO_(3)`

C

`CaSO_(4).2H_(2)O`

D

`CaCO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`A overset(Delta)rarr` colourless `+` Residue
Residue `+` water `rarr B`
`B(eq.) + aq "of" CO_(2) rarr` (solid)
`C overset(Delta)rarr A`
Colorless gas `rarr CO_(2)` therefore A is `CaCO_(3)`
`CaCO_(3) overset(Delta)rarr CO_(2)+CaO`
Promotional Banner

Topper's Solved these Questions

  • S-BLOCK ELEMENTS

    ALLEN|Exercise EXERCISE -1 (B)|1 Videos

  • S-BLOCK ELEMENTS

    ALLEN|Exercise EXERCISE -2|1 Videos

  • S-BLOCK ELEMENTS

    ALLEN|Exercise EXERCISE -3|1 Videos

  • s-Block element

    ALLEN|Exercise All Questions|14 Videos

  • SOLUTIONS

    ALLEN|Exercise EXERCISE -05 [B]|22 Videos

Similar Questions

Explore conceptually related problems

A compound X on heating gives a colourless gas. This residue is dissolved in water to obtain Y. excess CO_(2) is bubbled through aqueous solution of Y, Z is formed. Z on gentle heating give back X. the X is

A compound X on heating gives a colourless gas. This residue is dissolved in water to obtain Y. excess CO_(2) is bubbled through aqueous solution of Y, Z is formed. Z on gentle heating give back X. the X is

The compound A on heating gives a colourless gas and a residue that dissolved in water to obtain B. Excess of CO_(2) is bubbled through aqueous solution of B,C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound is:-

A solid compound 'X' on heating gives CO_(2) gas and a residue. The residue mixed with water forms 'Y' . On passing an excess of CO_(2) through 'Y' in water , a clear solution, 'Z' is obtained. On boiling 'Z' , compound 'X' is reformed. The compound 'X' is

A solid compound 'X' on heating gives CO_(2) gas and a residue. The residue mixed with water forms 'Y' . On passing an excess of CO_(2) through 'Y' in water , a clear solution, 'Z' is obtained. On boiling 'Z' , compound 'X' is reformed. The compound 'X' is

An element X burns in nitrogen to give a compound Y which on reaction with water gives a compound Z and a gas with a pungent smell. Z can be used during construction and white washing. When excess of CO_(2) is bubbled through Z, a compound P is formed which on heeating decomposes to give a compourless, odourless gas. identify X, Y, Z and P.

A metal X reacts with aqueous NaOH solution to form Y and a highly inflammalbe gas. Solution Y is heated and CO_(2) is poured through it. Z precipitates out and Na_(2)CO_(3) is formed. Z on the heating gives AI_(2)O_(3) . Identify X,Y and Z. X Y Z

An orange solid (X) on heating, gives a colourless gas (Y) and a only green residue (Z). Gas (Y) on treatment with Mg, produces a white solid substance……

A compound (A) on heating in Busen flame imparts brick red colouration. (A) on heating gives CO_(2) gas and a residue (B) . The residue (B) when treated with water gives (c ) . On passing an excess of CO_(2) through (C ) in water, a clear solution (D) is obtained. On boiling (D) , compound (A) is reformed. Residue (B) is

A compound (A) on heating in Busen flame imparts brick red colouration. (A) on heating gives CO_(2) gas and a residue (B) . The residue (B) when treated with water gives (c ) . On passing an excess of CO_(2) through (C ) in water, a clear solution (D) is obtained. On boiling (D) , compound (A) is reformed. Compound (A) is

ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. The pair whose both species are used in antacid medicinal preparation...

    Text Solution

    |

  2. Which of the following oxides is not expected to reast with sodium hyd...

    Text Solution

    |

  3. A compound X on heating gives a colourless gas. The residue is dissolv...

    Text Solution

    |

  4. Property of the alkaline earth metals that increases down the group w...

    Text Solution

    |

  5. Which of the following compounds has the lowest meting point?

    Text Solution

    |

  6. Match List-I with List-II for the composition of substances and select...

    Text Solution

    |

  7. Which of the following statements is incorrect

    Text Solution

    |

  8. Which of the following is not hygroscopic-

    Text Solution

    |

  9. The compound which does not exist as hydrate form

    Text Solution

    |

  10. Bleaching powder does not contain:

    Text Solution

    |

  11. Sodium sulphate is soluble in water whereas barium sulphate is sparing...

    Text Solution

    |

  12. The minimum equivalent conductane in fused state is shown by :-

    Text Solution

    |

  13. Sodium hydroxide is manufacture by the electrolysis of brine solutio...

    Text Solution

    |

  14. Sodium carbonate is manufactured by Solvay process. The products that ...

    Text Solution

    |

  15. Which of the following does not illustrate the anomalous properties of...

    Text Solution

    |

  16. Of the following the commonly used as a laboratory desiccator is

    Text Solution

    |

  17. Lithophone is a combination of ZnS and

    Text Solution

    |

  18. Which of following is equal with NaCI

    Text Solution

    |

  19. Thermal stability of BaCO(3), CaCO(3), and MgCO(3) is

    Text Solution

    |

  20. At anode in the electrolysis of fused NaCl:

    Text Solution

    |