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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.

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1y ago

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What gas evolved when potassium nitrate crystals are heated with concentrated sulphuric acid?

When potassium nitrate crystals are heated with concentrated sulphuric acid, nitric oxide gas (NO) is evolved. This is a result of the oxidation of nitrate ions in potassium nitrate by the sulphuric acid.


What is observed when copper oxide is added into excess dilute sulphuric acid?

When copper oxide is added into excess dilute sulphuric acid, it reacts to form copper sulfate and water. Additionally, hydrogen gas is evolved during the reaction.


What observations are made in the reaction of hexane and concentated sulphuric acid?

In the reaction of hexane with concentrated sulfuric acid, the acid acts as a dehydrating agent and can lead to the formation of alkyl sulfates and alkenes. The reaction may also produce some byproducts like water and sulfur dioxide gas. Heat is usually evolved during the reaction due to its exothermic nature.


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The gas evolved in the heating of potassium chlorate is oxygen gas (O2). The chemical equation for this reaction is: 2KClO3 (s) -> 2KCl (s) + 3O2 (g)


What if sulfuric acid and sodium are mixed?

When Sulphuric acid and Sodium are mixed, Hydrogen gas is evolved which makes a pop sound when a burning splinter or candle is bought near it. The following reaction takes place: H2S04 + Na - NaSO4 + H2


What happens when zinc is treated with sulphuric acid?

When zinc is treated with sulfuric acid, hydrogen gas is evolved, forming zinc sulfate and water as products. This reaction is a displacement reaction where zinc replaces hydrogen in the sulfuric acid to form zinc sulfate.


What is the evolved gas from sodium carbonate reaction?

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


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What happens when dilute sulphuric acid is poured on a copper plate-?

It depends, if the susexphuri acid is of a high concentration and is hot, then the copper plate will react and dissolve. sex though it is not a strongly oxidizing acid, hot concentrated sulfuric acid is a strong enough oxidizing agent to dissolve copper.


How is stomach growling an example of a chemical reaction?

A gas is evolved as a product of a chemical reaction.


How you call the starting substances that are evolved in a chemical reaction?

Reactants.


What cause the effervescence during the reaction of HCl and Zinc?

Zn + 2HCl -> ZnCl2 + H2 As you can see it is the hydrogen gas released in this reaction, which causes the effervescence. Just to note, in any reaction between a reactive metal and an acid, hydrogen gas is always produced.