A mixture of hydrogen and oxygen at 1 bar pressure contains 20% by mass of Hydrogen Calculate the partial - Chemistry - States of Matter

Question

A mixture of hydrogen and oxygen at 1 bar pressure contains 20%
by mass of Hydrogen Calculate the partial pressure of hydrogen

Chandra Prakash · Accepted Answer

20% means 100 gram
of mixture contain 20 gram of hydrogen therefore 80 gram will be
the oxygen

The partial
pressure of hydrogen = mole fraction of hydrogen x pure
pressure

Number of mole of
hydrogen = 20/1 = 20 moles

Number of mole of
oxygen = 80 /16 = 5 moles

Therefore mole
fraction of hydrogen = 20 /25 x 1

= 0 8
moles

A mixture of hydrogen and oxygen at 1 bar pressure contains 20% by mass of Hydrogen .Calculate the partial pressure of hydrogen .