Question

how+will+you+test+whether+the+gas+evolved+in+a+reaction+is+hydrogen

Answer 1

Answer:

* Take a few pieces of zinc granules in a boiling tube and add about 5 mL of dilute sulphuric acid to it.

* We will observe the formation of gas bubbles on the surface of zinc granules.

* Pass the gas being formed through the soap solution taken in a trough ( by means of a glass delivery tube ). Gas filled bubbles are formed in the soap solution which rise into the air.

* Bring a burning candle near a gas- filled soap bubble. The gas present in soap bubble burns with a 'POP' sound ( making a little explosion )

* Only 'HYDROGEN GAS' burns making a 'POP' sound. This shows that hydrogen gas is evolved in the reaction of dilute sulphuric acid with zinc metal ( taken in the form of zinc granules ).

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