Question

When a metal x is treated with cold water it gives a basic salt y with molecular formula XOH (molecular max =40) and liberates a gas z which easily catches fire. Identify x, y and z. Write the reaction involved

Answer 1

Answer:

The salt is NaOh and its molar mass can be calculated as follows :

Na(23) + O(16) + H(1) = 23 + 16 +1 = 40

it is clear that X is sodium, why is hydroxide and Z is hydrogen. Thec reaction can be shown by following equation:

2Na +2H^2O = 2NaoH + H^2 + Heat

Explanation:

hydrogen is highly inflammable gas and hence it easily catches fire .

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