What are examples of fast chemical reactions?
Chemical reactions that complete in a very short time, such as less than 10 -6 seconds, they are called fast reactions. Examples: Magnesium ribbon is burnt in the flame of Bunsen burner; it quickly gets combusted with a noticeable spark. Similarly, a neutralization reaction between acids and bases is a fast reaction.
What is slow and fast reaction give example?
Complete answer: The example of slow reactions are rusting of a water pipe, a piece of newspaper turning yellow and so forth. The fast reaction is defined as the reaction which takes a shorter time to complete. The fast reaction possesses a high rate of reaction. They possess smaller activation energy.
Is ammonia a reversible reaction?
Many reactions, such as burning fuel, are irreversible – they go to completion and cannot be reversed easily. Reversible reactions are different. It also shows that ammonia and hydrogen chloride (colourless gases) can react to form ammonium chloride again.
How can you increase the yield of ammonia?
Due to the Haber process being a reversible reaction, the yield of ammonia can be changed by changing the pressure or temperature of the reaction.
- Increasing the pressure of the reaction increases the yield of ammonia.
- Increasing the temperature of the reaction actually decreases the yield of ammonia in the reaction.
Why is the best yield of ammonia obtained at low temperature?
In the Haber process, the best yield of ammonia is produced at a low temperature. This means that the equilibrium will shift to favour the exothermic reaction, so therefore will shift right to increase the yield of ammonia at a low temperature.
Why doesn’t the Haber process have a 100% yield?
.. which means an equilibrium will form, so there is no chance of 100% yield even if you use, as you actually do, the theoretical reactant ratio of nitrogen : hydrogen of 1 : 3 ! So increasing pressure has two positive effects in terms of yield and getting to the maximum possible % equilibrium of ammonia.