Question

The circulation of blood in human body supplies $O_{2}$ and releases $CO_{2}$ The concentration of $O_{2}$ and $CO_{2}$ is variable but on an average, 100 ml blood contains $0.02\, g$ of $O_{2}$ and $0.08\,g$ of $CO_{2}$ The volume of $O_{2}$ and $CO_{2}$ at $1\, atm$ and at body temperature $37^{\circ} C$, assuming $10\, L$ blood in human body, is

• A. $2\, L, 4\, L$
• B. $1.5\, L, 4.5\, L$
• C. $1.59\, L, 4.62\, L$
• D. $3.82\, L, 4.62\, L$

Answer 1

Answer: (C)

$\because$ $100\, ml$ blood has $0.02\, g$ $O_{2}$ and $0.08\,g\,CO_{2}$
$\therefore $ $10,000\, ml$ blood has $2\,g\,O_{2}$ and $8\,g\,CO_{2}$
Using $PV= nRT$
for $O_{2}$, $1\times V_{o_2}=\frac{2}{32}\times0.0821\times310$
$\Rightarrow V_{o_2}=1.59$ Litre
for $CO_{2}, 1\times V_{CO_2} =\frac{8}{44}\times0.0821\times310$
$\Rightarrow V_{o_2}=4.62$ Litre