Correct order of osmotic pressure of the following solutions is (i) 30 ~g ~L ⁻¹ of glucose (ii) 60 ~g ~L ⁻¹ of NH ₂ CONH ₂ (iii) 80 ~g ~L ⁻¹ of glucose (iv) 58.5 ~g ~L ⁻¹ of NaCl

Step-by-step solution

NaCl is an ionic salt and go for complete ionisation, so has maximum osmotic pressure, while glucose and urea does not ionises. For NaCl (i=2) and for glucose and urea (i=1) =i C R T where, = osmotic pressure i= van't Hoff factor C= molarity R= gas constant T= temperature in Kelvin Also, =i n V R T [ C= n V ] and =i w M V R T If V, R and T are same i W M where, n= number of moles of solute aligned W & = mass of solute M & = molar mass of solute V & = volume aligned Thus, (i) 30 ~g ~mL ⁻¹ of glucose aligned (w=30, M