Question

When a metal X is treated with cold water ,it gives a base Y with molecular formula XOH

Answer 1

Answer:

Given, molecular formula of Y = XOH

And molecular mass OF Y = 40.

So, atomic mass of metal X would be;

M + 16 + 1 = 40 ⟹ M = 40 − 17=23

Metal with atomic mass 23 is sodium and reaction of it with cold water will form sodium hydroxide (NaOH).

2Na + 2H2O (Cold) → 2NaOH + H2↑

Hence; X = Sodium (Na), Y = Sodium hydroxide (NaOH), Z = Hydrogen gas (H2)