States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव
JEE Main & Advanced
Chemistry
States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव
Question Bank
Critical Thinking
question_answer
A sample of \[{{O}_{2}}\] gas is collected over water at \[{{23}^{o}}C\] at a barometric pressure of 751 mm Hg (vapour pressure of water at \[{{23}^{o}}C\] is 21 mm Hg). The partial pressure of \[{{O}_{2}}\] gas in the sample collected is [CBSE PMT 1993]
A) 21 mm Hg
B) 751 mm Hg
C) 0.96 atm
D) 1.02 atm
Correct Answer:
C
Solution :
Pressure of \[{{O}_{2}}\] (dry) = 751-21 = 730 mm Hg \[=\frac{730}{760}=0.96atm\]