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प्रश्न
The osmotic pressure of blood is 7.65 atm at 27°C. How much glucose should be used per litre to prepare an intravenous injection that has the same osmotic pressure as blood?
संख्यात्मक
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उत्तर
Given: Osmotic pressure, π = 7.65 atm
Temperature, T = 27°C = 300 K
Gas constant, R = 0.0821 L atm mol−1 K−1
Molar mass of glucose, M = 180 g/mol
`C = pi/(RT)`
= `7.65/(0.0821 xx 300)`
= 0.3107 mol/L
Mass of glucose = C × M
= 0.3107 × 180
= 55.93 g/L
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