Question

write the identification test of H2 and CO2 gas​

Answer 1

Answer:

Test for CO2 gas (lime water test) When CO2 gas is passed through lime water, it turns milky due to the formation of insoluble calcium carbonate. ... (d) Test for K, gas Hydrogen gas burns in the presence of air or oxygen with a pop sound when a burning candle is brought near it.

Explanation:

Answer 2

Fir H2...

When the gas is passed through a pipe exciting into water forming bubble inside water.. putting a burning candle near the bubbles will ignite the H2 gas and pop sound is produced.

For CO2..

When the gas is passed into Lime water, Ca(OH)2, it forms white precipitate of limestone or chalk. Reaction is given by..

Ca(OH)2 + CO2 ——> CaCO3 + H2O

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