4g of hydrogen reacts with 20g of oxygen to form water. The mass of water formed is? Why oxygen is the limiting reagent?
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24 g of water and water is a limiting reagent because it is in low quantity and can be exhausted earlier that hydrogen.
chesstini:
Answer is 22.5g
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1/2H2 + 1/2O2 --》H2O
1gm Hydrogen react with 16gm oxygen
As we can see oxygen is reqired in more amount as 4gm of H will require 64gm Oxygen.
Hence oxygen will we consumed fully as only 16gm is given and is limiting.
16gm O requires 1gm Hydrogen
20gm O requires 1/16×20=5/4gm Hydrogen
16gm O will give 18 gm water
20gm O will give 18/16×20=18×5/4
=22.5gm water
Hope it helps.
1gm Hydrogen react with 16gm oxygen
As we can see oxygen is reqired in more amount as 4gm of H will require 64gm Oxygen.
Hence oxygen will we consumed fully as only 16gm is given and is limiting.
16gm O requires 1gm Hydrogen
20gm O requires 1/16×20=5/4gm Hydrogen
16gm O will give 18 gm water
20gm O will give 18/16×20=18×5/4
=22.5gm water
Hope it helps.
Thnx
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