17) What happens when zinc metal is added to sulphuric acid ? Write the equation for this
reaction. What is the characteristic test for hydrogen gas?
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Answer:
Explanation:
Zinc metal gives hydrogen gas when it is treated with dilute sulphuric acid. Hydrogen gas is utilized in hydrogenation of oil.
Zn+2HCl→ZnCl
2
+H
2
Therefore, the gas evolved is hydrogen.
Test for hydrogen gas: When a burning candle is brought near the hydrogen gas, it burns with pop sound which confirms the presence of hydrogen gas.
Answered by
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Explanation:
Zinc metal dissolves slowly in dilute sulphuric acid to form solutions containing the aquated Zn(II) ion together with hydrogen gas, H2.
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