Question

Which of the following equation is correct to determine osmotic pressure using van't Hoff equation?

Options

• πV = `("W"_2"RT")/"M"_2`

• πC = VRT

• π = `("W"_2"RT")/"M"_2`

• πV = k

Answer 1

πV = `("w"_2"RT")/"M"_2`

Explanation:

Osmotic pressure follows the equation,

π = `("n"_2"RT")/"V"`

∵ n₂ (moles of solute) = `"W"_2/"M"_2`

∴ πV = `("W"_2"RT")/"M"_2`