Question

Zinc granules on treating with
an acid X, form the zinc
sulphate (ZnSO4) salt along
with the evolution of a gas Y
which burns with a pop sound
when brought near to a
burning candle. Identify the
acid X and gas evolved Y*
H2SO4 ACID, O2 GAS
H2S04 ACID, H2 GAS
HCI ACID, H2 GAS
NONE​

Answer 1

Answer:

Zinc granules (Zn)Acid XZinc Sulphate (ZnSO4)Gas Y

Acccording to the information given in the question, zinc granules react with acid X to form zinc sulphate and a gas Y.

So, Zn + X —> ZnSO4 + Y

Now, the question says that when the gas is brought near a candle a Pop sound is produced.

We know that, the pop sound produced when brought near a candle is a feature of hydrogen gas.

Hence, Y = hydrogen gas.

So, Zn + X —> ZnSO4 + H2

Now, we see the presence of zinc on both the sides in equal amount, so zinc is balanced.

Now, the unbalanced molecules in the right side is SO4 and H2.

We know that, H2SO4 is an acid.

Hence, we can conclude X = H2SO4.

So, the balanced equation for the activity given in the question will be :

Zn + H2SO4 —> ZnSO4 + Y.

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Answer 2

Answer:

X- Hydrochloric acid and Y- Hydrogen gas