Question

Human blood gives rise to an osmotic pressure of approximately $7.65atm$ at body temperature, $37{}^{\circ }C$. Hence, molarity of an intravenous glucose solution to have the same osmotic pressure as blood is:

• A. $0.30M$
• B. $0.20M$
• C. $0.10M$
• D. $0.50M$

Answer 1

The correct option is A $0.30M$

By using the relation,
$\pi =CRT\text{where},\pi =\text{osmotic pressure}C=\text{Concentration},$
$R=\text{Universal gas constant},T=\text{Temperature in Kelvin}T=37+273=310K7.65=C\times 0.0821\times 310\therefore C=0.30M$