Q : 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.
a. X- Sulphuric acid and Y- Oxygen gas
b. X- Hydrochloric acid and Y- Oxygen gas
c. X- Sulphuric acid and Y- Hydrogen gas
d. X- Hydrochloric acid and Y- Hydrogen gas
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Answer: Option (d)
X is hydrochloric acid
Y is hydrogen gas
Zinc granule displaces hydrogen from hydrochloric acid to form zinc sulphate
When a gas is ivolved and it burns with a pop sound then always keep in mind that the gas would be hydrogen
here after zinc displaced hydrogen, the hydrogen gas evolved
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