Home
Class 10
CHEMISTRY
When a metal X is treated with cold wate...

 When a metal X is treated with cold water, it gives a basic salt Y With molecular formula XOH (molecular mass =40) and liberates a gas Z which easily catches fire. Identify X , Y and Z and also write the reaction involved. 

Text Solution

Verified by Experts

Molecular mass of base Y (XOH) = 40
Atomic mass of X = 40 - (16 + 1) = 23
The metal X is sodium (Na). The salt Y is NaOH and liberated gas Z is hydrogen.
`underset(("X"))(2Na(s)) + 2H_(2)O(aq) rarrunderset(("Y"))(2NaOH)(aq) + H_(2)(g)`
Promotional Banner

Topper's Solved these Questions

  • METALS AND NON-METALS

    DINESH PUBLICATION|Exercise MCQ|64 Videos

  • METALS AND NON-METALS

    DINESH PUBLICATION|Exercise Long Answer Questions|23 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    DINESH PUBLICATION|Exercise Multiple Choice Questions|18 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    DINESH PUBLICATION|Exercise PBQs|28 Videos

Similar Questions

Explore conceptually related problems

When a metal 'X' is treated with cold water, it gives a basic salt 'Y' with molecular formula XOH (Molecular mass = 56) and liberates a gas 'Z' which easily catches fire. Identify X, Y and Z and also write the reaction involved.

An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reactions involved.

A gas X reacts with lime water and forms a compound Y which is used as a bleaching agent in chemical industry. Identify X and Y . Give the chemical equation of the reaction involved.

An alkali metal 'A' gives a compound B (molecular mass = 56) on reacting with water. The compound 'B' gives a soluble compound 'C' on treatment with aluminium oxide. Identify A, B and C and give the reactions involved.

Of the three metals X, Y and Z, X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.