Ques. 1AIPMT 2002
A solution contains non-volatile solute of molecular mass M2. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure?
- M2 = ( m2 )VRT
- M2 = ( m2V ) RT
- M2 = ( m2V ) RT
- M2 = ( m2V ) RT
Answer
(2) M2 = ( m2V ) RT
Solution
As per NCERT, osmotic pressure = CRT = n2VRT
n2 = m2M2 ⇒ = m2 RTM2 V
∴ M2 = ( m2V ) RT
Answer: (2)