Asolution is prepared by dissolving 0.60 g of nicotine (a nonelectrolyte) in water to make 12 ml of solution. the osmotic pressure of the solution is 7.55 atm at 25 °c. the molecular weight of nicotine is g/mol.

Molecular weight of nicotine is 162 g/mol

Explanation:

Osmotic pressure () for nonelectrolyte is expressed as-

where C is molarity of solution, R is gas constant and T is temperature in Kelvin scale.

If molecular weight of nicotine is W g/mol then number of moles of nicotine present in solution is equal to moles

So, molarity (C) of solution =

R is equal to 0.082 L.atm/(mol.K), T is 298 K and ) is 7.55 atm

So,

or, W = 162

So molecular weight of nicotine is 162 g/mol

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