Question

2 mol h2 gas in a mixture of h2 and o2 gases of 10 moles.
find mole fraction of h2​

Answer 1

Answer:

Ans 1) A mixture of gases contains H2

and O

2

gases in the ratio of 1:4 (w/w).

Let 100 g of hydrogen and 400 g of oxygen are present.

The molar masses of hydrogen and oxygen are 2 g/mol and 32 g/mol respectively.

The number of moles of hydrogen present are

2

100

=50 mol.

The number of moles of oxygen present are

32

400

=12.5 mol.

The molar ratio of the two gases in the mixture is 50:12.5 or 4:1.

Ans 2) The molar masses of hydrogen and oxygen are 2 g/mol and 32 g/mol respectively. =12.5 mol. The molar ratio of the two gases in the mixture is 50:12.5 or 4:1.

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