A neon-dioxygen mixture contains 70.6 g dioxygen and
167.5g neon. If pressure of the mixture of gases in the cylinder
25 bar. What is the partial pressure of dioxygen and neon
in the mixture ?
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.Full explanation
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Explanation:
The mass of dioxygen is 70.6 g.
The molar mass of dioxygen is 32 g/mol.
The number of moles of dioxygen
= 32 g/mol 70.6 g = 2.21 mol
The mass of neon is 167.5 g.
The molar mass of neon is 20.2 g/mol.
The number of moles of neon
= 20.2 g/mol 167.5 g = 8.29 mol
The total number of moles of neon and dioxygen = 2.21 + 8.29= 10.49
The mole fraction of neon = 10.49 8.29 = 0.789
Total pressure in the cylinder is 25 bar.
The partial pressure of neon = 0.789 × 25 bar= 19.7 bar
The partial pressure of dioxygen = 25 bar − 19.7 bar = 5.3 bar
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