A gas is filled in the glass bulb of capacity 10 litre as shown in figure at 300 K Density - Chemistry - States of Matter

Question

A gas is filled in the glass bulb of capacity 10 litre as shown in
figure at 300 K
Density of glycerin = 2 72 g/ml
Density of mercury = 13 6 g/ml

Now, select the correct statement(s) among the following:
(A) pressure of the gas is 3 28 atm
(B) pressure of the gas is 0 342 atm
(C) moles of the gas in the bulb are 0 34
(D) moles of the gas in the bulb are 1 33

Vartika Jain · Accepted Answer

Dear Student,

1 atm = 760 mmHg760 mmHg =mm glycerine(density of glycerinedensity of Hg)760 mmHg =mm glycerine(2
7213
6)or, mm glycerine , P0= 3800 mmHgPgas =P0-h         =3800 mm-2
5×103 mm         =3800-2500         =1300 mmor, Pgas=13003800=0
34 atmNowPV=nRTor, n=PVRTor, n=0 34×100
0821×300=0
138 molHence, correct answer is (B)