Q28 / 118 · NTA Abhyas (NEET) 2020 · Chemistry · States of Matter

A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

  • Correct answer
    A
    0.8 bar
  • B
    0.4 bar
  • C
    1.6 bar
  • D
    3.2 bar

Solution

Let the weight of mixture = 100 g

PH2=PTotal.XH2

=PTotal×nH2nH2+nO2

=1×202202+8032 bar=0.8 bar

Hence, the correct answer is option: 'A'.

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