The boiling point of water is 100.0°C at 1 atmosphere. How many grams of cobalt(II) chloride (129.8 g/mol), must be dissolved in 250.0 grams of water to raise the boiling point by 0.450°C? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula KL (°C/m) K¢(°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHC13 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 g cobalt(II) chloride.

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The boiling point of water is 100.0°C at 1 atmosphere.
How many grams of cobalt(II) chloride (129.8 g/mol), must be dissolved in 250.0 grams of water to raise the boiling point by 0.450°C? Refer to the table for the necessary boiling or freezing point constant.
Solvent
Formula
Kb (°C/m) Kf (°C/m)
Water
H20
0.512
1.86
Ethanol
CH3CH2OH
1.22
1.99
Chloroform
CHC13
3.67
Benzene
C6H6
2.53
5.12
Diethyl ether CH3CH2OCH2CH3
2.02
g cobalt(II) chloride.
Transcribed Image Text:The boiling point of water is 100.0°C at 1 atmosphere. How many grams of cobalt(II) chloride (129.8 g/mol), must be dissolved in 250.0 grams of water to raise the boiling point by 0.450°C? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kb (°C/m) Kf (°C/m) Water H20 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHC13 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 g cobalt(II) chloride.
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