Chemistry, asked by khushi988496, 1 year ago

3g of H2 react with 29g of O2 to give H2O. .
a.calculate the maximum amount of H2O that can be formed
b. calculate the amount of the reactant which remains unreacted

Answers

Answered by Anonymous
1

3g of hydrogen will be the limiting reagent.

2H2+O2 ------->2H2O

From the above equation it is clear that 2 mole H2 react with 1 mole O2


Molar mass of H2 = 2g


Molar mass of O2= 32 g


​This implies,


4 g H2 react with 32 g O2


3 g H2 reacts with = (32/4) x 3g of O2 gas

= 24 g

As the given amount of O2 is more than required therefore O2 is excess reagent and H2 is limiting reagent.


B.

2 mole of hydrogen gas reacts to form 2 mole of water molecule therefore,

4 g of H2 produces = 36 g of water


So the amount of H2O produced by 3 g H2 = (36/4) x 3

= 27 g

Hence, 27 g of water will be produced during the recation


C.

As, 24 g of oxygen has been utilised during the recation and 29 g of oxygen was supplied therefore amount of oxygen gas left is (29-24) = 5g

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And calculate the maximum amount of hydrogen that can be form


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