What are the tests of hydrogen and carbon dioxide?

Answer 1

Carbon and hydrogen are detected qualitatively by heating a mixture of the given substance with dry copper (II) oxide in a glass tube. The organic substance is oxidize and carbon dioxide and water are formed. The presence of carbon dioxide is indicated by the formation of a white precipitate of calcium carbonate, when the gaseous products are passed through a solution of lime water. The presence of hydrogen is indicated by the formation of droplets of water in the tube.

Answer 2

put a glowing ember to it

the ember dies in CO2 and causes an explosion in hydrogen

Also bubble the gas through limewater (saturated calcium hydroxide solution). Carbon dioxide reacts to form calcium carbonate which turns the liquid cloudy.

Ca(OH)2 (aq) + CO2 (g) → CaCO3 (s) + H2O (l)

Answer 3

If you put a burning splint overtop of a test tube full of hydrogen, it will pop. If you put a burning splint in a test tube with carbon dioxide, it will be extinguished. Also, if you bubble carbon dioxide through limewater (saturated calcium hydroxide solution). Carbon dioxide reacts to form calcium carbonate which turns the liquid cloudy.

Ca(OH)2 (aq) + CO2 (g) → CaCO3 (s) + H2O (l)

Answer 4

The chemical test for carbon dioxide is by using the lime water test - lime water turns cloudy in the presence of Carbon Dioxide

Answer 5

if a burning splint is brought into contact with hydrogen gas a squeaky pop sound will be produced this would prove that hydrogen is present as hydrogen is extremely flamable.

Answer 6

it gives ch4 with right catalist , but i dont know hw to do that

Answer 7

Hydrogen- A squeaky pop will happen if hydrogen is present.

Oxygen- A gloing spint will relight.

Carbon Dioxide- Limewater turns cloudy.

Answer 8

The test for hydrogen is the squeaky pop test. You bring a lighted splint to the gas, and a you will hear a squeaky pop sound.

The chemical equation is:

2H2 + O2 ----> 2H2O

Answer 9

decomposition reaction