JEE Main 2022 · 24 Jun · Shift 1 · Chemistry Q83

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ChemistryInteger+4 / -1Question 83 of 90

The osmotic pressure of blood is 7.47 bar at 300 K. To inject glucose to a patient intravenously, it has to be isotonic with blood. The concentration of glucose solution in $\mathrm{gL^{-1}}$ is ______.

(Molar mass of glucose $=180\ \mathrm{g\,mol^{-1}}$ , $R=0.083\ \mathrm{L\,bar\,K^{-1}mol^{-1}}$ ) (Nearest integer)

Your answer

Answer and worked solution

Official answer: 54

Isotonic. $\pi=CRT$ , so $C=\dfrac{7.47}{0.083\times300}=\dfrac{7.47}{24.9}=0.3$ mol L $^{-1}$ .

In g/L. $0.3\times180=54$ g L $^{-1}$ .

Answer: 54

Topics:Colligative properties

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JEE Main 2022 · 24 Jun · Shift 1, Chemistry question 83