The pressure of a 1:4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen?
(i) 0.8 × 10 5 atm
(ii) 0.008 Nm-2
(iii) 8 ×104 Nm-2
(iv) 0.25 atm
The pressure of a 1:4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen?
(i) 0.8 × 10 5 atm
(ii) 0.008 Nm-2
(iii) 8 ×104 Nm-2
(iv) 0.25 atm
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1 Answer
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This is a multiple choice answer as classified in NCERT Exemplar
option (iii) 8 × 104 Nm-2
Partial pressure of oxygen, Po2= Xo2 Ptotal
Mole fraction of O2=
= =
Po2= 1 = (?Ptotal = 1 atm)
1 atm = 1.1034 × 105 Nm-2 or Pa
Partial pressure of dioxygen = 0.8 ×105 = 8×104 Nm-2
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