When a metal X is treated with cold water, it gives a basic salt Y with molecular formulaXOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y andZ and also write the reaction involved.
Question
When a metal X is treated with cold water, it gives a basic salt Y with molecular formulaXOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y andZ and also write the reaction involved.
Solution
The metal X is likely Sodium (Na). When Sodium reacts with cold water, it forms Sodium Hydroxide (NaOH) and liberates Hydrogen gas (H2), which easily catches fire.
The reaction can be written as follows:
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
So, X is Sodium (Na), Y is Sodium Hydroxide (NaOH), and Z is Hydrogen (H2).
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