Y g of a non-volatile organic subsatance of molecular mass M is dissoved in 250 g of benzene. Molal elevation constant of benzene is `K_(b)`. Elevatio

Question

Y g of a non-volatile organic subsatance of molecular mass M is dissoved in 250 g of benzene. Molal elevation constant of benzene is `K_(b)`. Elevatio

Y g of a non-volatile organic subsatance of molecular mass M is dissoved in 250 g of benzene. Molal elevation constant of benzene is `K_(b)`. Elevation in boiling point is given by
A. `M/(K_(b)Y)`
B. `(4K_(b)Y)/M`
C. `(K_(b)Y)/(4M)`
D. `(K_(b)Y)/M`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - b
`DeltaT_(b)=K_(b)xx(W_(B)xx1000)/(M_(B)xxW_(A))`
`=K_(b)xx((Y_(g))xx(1000 g ))/(Mxx(250g ))`
`(K_(b)xxYxx4)/M=(4K_(b)y)/M`

4 views Answered 2023-02-05 15:29