Question

a mixture of hydrogen and dioxygen at one bar pressure contain 20% by weight of dihydrogen. calculate the partial pressure of dihydrogen.​

Answer 1

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Answer 2

Answer:

Pressure of the gas mixture = 1 bar

Let us consider 100g of the mixture

So ,mass of hydrogen in the mixture  = 20 g

& mass of oxygen in the mixture = 80 g

Using the respective molar masses, we get

 nH = 20/ 2  = 10 mol

. nO = 80 / 32 = 2.5 mol

Then, pH = XH x Ptotal

= (nH / nH + nO) x P total  

= (10 / 10 + 2.5 ) x  1  

= 0.8 bar

Hence, the partial pressure of dihydrogen is 0.8 bar.

Explanation: