Question

The osmotic pressure of blood is 7.40 atm at ${27}^{o}C$. The number of mol of glucose to be used per litre for an intravenous injection that is to have the same osmotic pressure as blood is:

• A. 0.3
• B. 0.2
• C. 0.1
• D. 0.4

Answer 1

The correct option is A 0.3

$\pi =\frac{n}{V}RT$

$n=\frac{\pi V}{RT}=\frac{7.40\times 1}{0.0821\times 300}=0.3$

Hence, the correct option is $A$