1.The normal freezing point of water, H2O, is 0.00 °C and its Kfp value is 1.86 °C/m. A nonvolatile, nonelectrolyte that
Posted: Wed Jun 08, 2022 8:23 pm
1.The normal freezing point of water, H2O, is 0.00 °C and its
Kfp value is 1.86 °C/m. A nonvolatile, nonelectrolyte that
dissolves in water is antifreeze (ethylene glycol). If 14.74 grams
of antifreeze, CH2OHCH2OH (62.10 g/mol), are dissolved in 177.6
grams of water:
The molality of the solution is __ m. T
he freezing point of the solution is__ °C.
2.The normal freezing point
of water (H2O)
is 0.00 °C and its
Kfp value is 1.86 °C/m.
A nonvolatile, nonelectrolyte that dissolves
in water is sucrose .
How many grams
of sucrose, C12H22O11 (342.3 g/mol),
must be dissolved in 276.0 grams
of water to reduce the freezing point
by 0.300 °C?
__g sucrose.
3.The normal boiling point
of ethanol CH3CH2OH is 78.500 °C
and its Kbp value
is 1.22 °C/m.
In a laboratory experiment, students synthesized a new compound
and found that when 14.70 grams of the
compound were dissolved in 218.0 grams
of ethanol, the solution began to boil
at 78.592 °C. The compound was also
found to be nonvolatile and a nonelectrolyte.
What is the molecular weight they determined for this compound?
__g/mol
4.The normal freezing point
of water (H2O)
is 0.000 °C and its
Kfp value
is 1.86 °C/m.
In a laboratory experiment, students synthesized a new compound and
found that when 13.70 grams of the
compound were dissolved in 245.0 grams
of water, the solution began to freeze
at -0.304 °C. The compound was also
found to be nonvolatile and a nonelectrolyte.
What is the molecular weight they determined for this
compound?
__g/mol
Kfp value is 1.86 °C/m. A nonvolatile, nonelectrolyte that
dissolves in water is antifreeze (ethylene glycol). If 14.74 grams
of antifreeze, CH2OHCH2OH (62.10 g/mol), are dissolved in 177.6
grams of water:
The molality of the solution is __ m. T
he freezing point of the solution is__ °C.
2.The normal freezing point
of water (H2O)
is 0.00 °C and its
Kfp value is 1.86 °C/m.
A nonvolatile, nonelectrolyte that dissolves
in water is sucrose .
How many grams
of sucrose, C12H22O11 (342.3 g/mol),
must be dissolved in 276.0 grams
of water to reduce the freezing point
by 0.300 °C?
__g sucrose.
3.The normal boiling point
of ethanol CH3CH2OH is 78.500 °C
and its Kbp value
is 1.22 °C/m.
In a laboratory experiment, students synthesized a new compound
and found that when 14.70 grams of the
compound were dissolved in 218.0 grams
of ethanol, the solution began to boil
at 78.592 °C. The compound was also
found to be nonvolatile and a nonelectrolyte.
What is the molecular weight they determined for this compound?
__g/mol
4.The normal freezing point
of water (H2O)
is 0.000 °C and its
Kfp value
is 1.86 °C/m.
In a laboratory experiment, students synthesized a new compound and
found that when 13.70 grams of the
compound were dissolved in 245.0 grams
of water, the solution began to freeze
at -0.304 °C. The compound was also
found to be nonvolatile and a nonelectrolyte.
What is the molecular weight they determined for this
compound?
__g/mol