First slide

Theory of dilute solutions

Question

The osmotic pressure of blood is 7.40 atm at 27 $°$ 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

Moderate

A

0.3
B

0.2
C

0.1
D

0.4

Solution

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

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