Write these notes for oxygen, hydrogen, carbon dioxide :: How the gas is produced :: What the gas looks like :: How you test for each gas :: Which of the gases are elements :: Which of the gases are compounds :: Why we need to test for these gases
Answers
Answer:
OXYGEN:
How the gas is produced: oxygen can be produced by the electrolysis of water and oxygen will be liberated at the anode.
What the gas looks like : the gas is colourless, odorless and tasteless and has a bluish tint when liquidised.
How you test for each gas : Test for O2 gas is when a wooden splinter is brought near the mouth of the gas jar containing oxygen gas, it burns brightly as oxygen is the supporter of combustion.
Which of the gases are elements : It is an element.
Why we need to test for these gases: We need to test for oxygen to identify if the gas produced during a reaction is oxygen or not.
HYDROGEN:
How the gas is produced: hydrogen can also be produced by the electrolysis of water and hydrogen gas will be liberated at the cathode.
What the gas looks like : The gas is colourless, odorless and tasteless.
How you test for each gas :Test for H2 gas is when a burning candle is brought near the gas it will make a pop sound.
Which of the gases are elements: it is an element.
Why we need to test for these gases: We need to test for hydrogen to identify if the gas produced during a reaction is hydrogen or not.
CARBON DIOXIDE:
How the gas is produced: It can be prepared by treating a metal carbonate with an acid.
CaCO3 + 2HCl ---------> CaCl2 + H2O + CO2
What the gas looks like : Carbon dioxide is colorless. At low concentrations the gas is odorless; however, at sufficiently-high concentrations, it has a sharp, acidic odor.
How you test for each gas : Test for CO2 gas is when burning candle is brought near the gas, the flame will extinguish.
Which of the gases are compounds: It is a compound.
Why we need to test for these gases: We need to test for carbon dioxide to identify if the gas produced during a reaction is carbon dioxide or not.
__________________________________________________________
I HOPE THIS HELPED. PLEASE MARK AS BRAINLIEST SINCE I PUT MY TIME AND EFFORT TO HELP YOU :)