Identify gas A in the following experiment.
B. Hydrogen
C. Oxygen
D. Carbon dioxide
B. Hydrogen
Explanation:
Mg is highly reactive with dil. HCl.
Mg + 2Hcl ⟶ `"H"_{2}` + Mg`"Cl"_{2}`.
A cracking sound is heard as hydrogen burns.
Copper will not react with dil. HCl.
While dil. HCl is added to Fe, then ferrous chloride (FeCl2) and hydrogen gas (H2) will be formed.
2HCl + Fe ⟶ Fe`"Cl"_{2}` + `"H"_{2}`.
Mg + 2Hcl ⟶ `"H"_{2}` + Mg`"Cl"_{2}`.
A cracking sound is heard as hydrogen burns.
Copper will not react with dil. HCl.
While dil. HCl is added to Fe, then ferrous chloride (FeCl2) and hydrogen gas (H2) will be formed.
2HCl + Fe ⟶ Fe`"Cl"_{2}` + `"H"_{2}`.
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