How will you test for a gas which is liberated when HCL reacts with an active metal? (CBSE 2008)
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Answer:Zn+ HCl-------->ZnCl2+H2
Explanation:
Hydrogen gas is evolved.
Hydrogen gas is a neutral,colorless gas and turns moist red litmus to blue.
Hydrogen -air mixture is highly explosive.
It burns with a 'pop' sound when exposed to air.
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