Chemistry · D and f Block Elements
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FIX THIS:Y G of non-volatile substance (molecular mass M) is dissolved into 50 G of Benzene. If Kb is the metal elevation constant, the value of T , is given by
- A
4 M/Kb.Y
- B
4 Kb.Y/M
- C
Kb.Y /4M
- D
Kb.Y /M
The equation to calculate the boiling point elevation (ΔTb) is ΔTb = Kb * m
Where m is the molality of the solute.
Molality (m) is calculated by
Dividing the moles of the solute (Y g / M) by the mass of the solvent
(50 g / 78.11 g/mol).
Hence, ΔTb = Kb * (Y / (M * 50 / 78.11)), which
Simplifies to ΔTb = 4Y / (M * Kb).
Therefore, T (boiling point) is given by:
T = Tb + ΔTb = Tb + (4Y / (M * Kb)), which can be written as T = 4M / Kb * Y.
The equation to calculate the boiling point elevation (ΔTb) is ΔTb = Kb * m
Where m is the molality of the solute.
Molality (m) is calculated by
Dividing the moles of the solute (Y g / M) by the mass of the solvent
(50 g / 78.11 g/mol).
Hence, ΔTb = Kb * (Y / (M * 50 / 78.11)), which
Simplifies to ΔTb = 4Y / (M * Kb).
Therefore, T (boiling point) is given by:
T = Tb + ΔTb = Tb + (4Y / (M * Kb)), which can be written as T = 4M / Kb * Y.
The equation to calculate the boiling point elevation (ΔTb) is ΔTb = Kb * m
Where m is the molality of the solute.
Molality (m) is calculated by
Dividing the moles of the solute (Y g / M) by the mass of the solvent
(50 g / 78.11 g/mol).
Hence, ΔTb = Kb * (Y / (M * 50 / 78.11)), which
Simplifies to ΔTb = 4Y / (M * Kb).
Therefore, T (boiling point) is given by:
T = Tb + ΔTb = Tb + (4Y / (M * Kb)), which can be written as T = 4M / Kb * Y.
The equation to calculate the boiling point elevation (ΔTb) is ΔTb = Kb * m
Where m is the molality of the solute.
Molality (m) is calculated by
Dividing the moles of the solute (Y g / M) by the mass of the solvent
(50 g / 78.11 g/mol).
Hence, ΔTb = Kb * (Y / (M * 50 / 78.11)), which
Simplifies to ΔTb = 4Y / (M * Kb).
Therefore, T (boiling point) is given by:
T = Tb + ΔTb = Tb + (4Y / (M * Kb)), which can be written as T = 4M / Kb * Y.
The equation to calculate the boiling point elevation (ΔTb) is ΔTb = Kb * m
Where m is the molality of the solute.
Molality (m) is calculated by
Dividing the moles of the solute (Y g / M) by the mass of the solvent
(50 g / 78.11 g/mol).
Hence, ΔTb = Kb * (Y / (M * 50 / 78.11)), which
Simplifies to ΔTb = 4Y / (M * Kb).
Therefore, T (boiling point) is given by:
T = Tb + ΔTb = Tb + (4Y / (M * Kb)), which can be written as T = 4M / Kb * Y.
Tagged under Chemistry · D and f Block Elements · 2015