Question

Compound X is a symmetrical gaseous hydrocarbon. Its molecular mass is 28 . Wrote the chemical reaction of X with H2 gas in nickel

Answer 1

Explanation:

X is Na , Y is NaOH and Z is H2

The reaction is : 2Na + 2H2O→ 2NaOH + H2 + Heat Energy

Since the molecular formula of Y = XOH, let’s suppose the atomic weight of metal X is a. Then, molecular mass of XOH = a + 16 + 1 = 400.

Then, a = 40 – 17 = 23. The atomic weight of sodium is 23, so metal X is sodium (Na). Sodium reacts with water to give hydrogen gas (Z) that catches fire.

So, metal X is sodium (Na), Y is (sodium hydroxide) and Z is H2 (hydrogen gas).

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Answer 2

Answer:

Compound X is C2H4 or ethene

Explanation:

Mass of ethene is 28 and on reacting with H2/Ni undergoes hydrogenation to give ethane (C2H6)

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