0.90g of a non-electolyte was dissolved in 87.9 g of benzene. This reised the boiling point of benzene by `0.25^(@)C`. If the molecular mass of the no

Question

0.90g of a non-electolyte was dissolved in 87.9 g of benzene. This reised the boiling point of benzene by `0.25^(@)C`. If the molecular mass of the no

0.90g of a non-electolyte was dissolved in 87.9 g of benzene. This reised the boiling point of benzene by `0.25^(@)C`. If the molecular mass of the non-electrolyte is 103.0 g `mol^(-1)` , calculate the molal elecation constant for benzene.

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

When 2.0g of a non-volatile solute was dissolved in 90 gm of benzene, the boiling point of benzene is raised by 0.88K. Which of the following may be t

2 Answers 5 Views

0.70 g of an organic compund when dissolved in 32g of acetone produces in an elevation in boiling point of `0.25^(@)C`. Calculate the molecular mass o

2 Answers 5 Views

Calculate the boiling point of a solution containing 1.8 g of a non-volatile solute dissolved in 90 g of benzene. The boiling point of pure benzene is

2 Answers 5 Views

The boiling point of water is `100^(@)C` and it becomes `100.52^(@)C` if 3 g of a non-voltile is dissolved in 20 mL of it. Calculate the molecular wei

2 Answers 8 Views

Calculate the molecular mass of a substance, 1.0 gram of which when dissolved in 100 gram of solvent gace an elecation of 0.307 K in the boiling point

2 Answers 10 Views

The boiling point of water becomes `100.52^(@)C` if 1.5 g of a non-volalite solute is dissolved in 100 mL of it. Calculate the molecular weight of the

2 Answers 4 Views

When 1.5 g of a non-volatile solute was dissoved in 90 g of benzene, the boiling point of benzene was raised from `353.23^(-1)` K to 353.93 K. Calcula

2 Answers 6 Views

When 1.0 g of a non-volatie solute was dissolved in 10 g benzene, elevation in boiling point temperature was found to be `1^(@)C`. Calculate the molar

2 Answers 7 Views

1.0 g of a non-electolyte solute (molar mass 250 g `mol^(-1)`) was dissolved in 51.2 g of benzene. If the `K_(f)` for benzene is 5.12 K kg `mol^(-1)`,

2 Answers 4 Views

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

2 Answers 4 Views

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

Salim Ahmed Kawsar

`K_(B)=(DeltaT_(b)xxM_(B)xxW_(A))/W_(B)`
`W_(B)=0.90g,W_(A)=87.9g=0.0879 kg, M_(B)=103.0 g mol^(-1),`
`DeltaT_(b)=0.25 K`
`K_(b)=((0.25K)xx(103.0gmol^(-1))xx(0.0879kg))/((0.90g))=2.52 K kg mol^(-1)`

5 views Answered 2023-02-05 15:29