Question

Name the colourless gas that evolves when k is react with h2o .how will you test this gas.

Answer 1

Hey buddy

when potassium (k ) reacts with H2O....

Then it forms potassium hydroxide and liberate HYDROGEN gas .

we can test the liberated gas by bringing a burning candle near it .

then it will start producing pop sounds which shows the presence of hydrogen gas .

Answer 2

H2 is the correct answer...

we can test it passing the gas through a soap solution. hydrogen being lighter than air would rise and release bubbles.

bring a candle near the bubbles, it would burst with a pop-pop sound.

This shows the presence of hydrogen gas.

Tysm❤️