A gaseous mixture of Ne and `O_(2)` is taken in a copper vessel of 200mL capacity at 6 bar and `27^(@)C`. The vapur density of the gaseous mixture is 11.5. Now, the vessel is heated to `127^(@)C`, at which half of the `O_(2)(g)` combined with the vessel forming a solid oxide of negligible volume. Neglecting thermal expansion in the vessel, the final partial pressure of `O_(2)(g)` is : (Ne=20)

Options

A. 1bar
B. 2 bar
C. 1.75bar
D. 7bar

Answer

a