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When a gas is released as a byproduct of a chemical reaction, it is referred to as gas evolved. This gas is usually observed as bubbles forming or a visible release of gas during the reaction. Examples include the evolution of oxygen in the electrolysis of water or the release of carbon dioxide in the reaction between baking soda and vinegar.

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Q: What is gas evolved?
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Related questions

Which gas is evolved when KMnO4 reacts with H2C2O4?

The evolved gas is carbon dioxide (CO2).


Which gas is evolved when iron reacts with sulphuric acid write the word equation evolved how will you didcate for the gas evolved in the reaction?

When iron reacts with sulfuric acid, hydrogen gas is evolved. The word equation for this reaction is: Iron + Sulfuric acid -> Iron sulfate + Hydrogen gas. To indicate the gas evolved in the reaction, one can place a downward arrow (↓) next to the hydrogen gas in the products.


What is the gas evolved at anode during electrolysis of aqueous NaCl?

Chlorine gas is evolved at the anode during the electrolysis of aqueous sodium chloride (NaCl) because chloride ions are oxidized to form chlorine gas.


What gas is evolved when acetone-bisulfite with HCl?

When acetone bisulfite reacts with HCl, sulfur dioxide gas is evolved.


What is the evolved gas from sodium carbonate reaction?

The evolved gas from the reaction of sodium carbonate is carbon dioxide (CO2).


What the name of he gas evolved when baking soda reacts with dilute hydrochloric acid?

Hydrogen gas- very explosive when mixed with a spark


Which gas is evolved when carbonates are treated with acid?

Carbon dioxide gas, CO2(gas)


Which gas is evolved during photosynthesis?

Oxygen gas is evolved during photosynthesis as a byproduct of the light-dependent reactions in the chloroplasts of plant cells.


What gas evolved when acids act on certain metals?

Hydrogen gas, H2


What is the test for the gas evolved when sodium hydrogen carbonate is added to acetic acid?

The gas evolved is carbon dioxide. The test is that it turns lime water milky.


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Carbon dioxide gas is evolved on heating sodium carbonate. This is due to the decomposition of sodium carbonate into sodium oxide and carbon dioxide gas when heated.


Which gas is evolved when potassium ferrocyanide crystals are heated with conc. sulphuric acid?

When potassium ferrocyanide crystals are heated with concentrated sulfuric acid, the gas evolved is hydrogen cyanide (HCN). This gas is toxic and should be handled with caution in a well-ventilated area.