part 09 imfa and solubility
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Part 09 IMFA and Solubility. 1.Solutions -homogeneous mixture -dissolved substance: solute -dissolving substance: solvent -e.g. sugar in water sugar is the solute water is the solvent. - PowerPoint PPT PresentationTRANSCRIPT
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Part 09IMFA and Solubility
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1. Solutions- homogeneous mixture- dissolved substance: solute- dissolving substance: solvent
- e.g.sugar in watersugar is the solutewater is the solvent
Water can form H-bonds with substances that also have H with F,O,N. This enhances the dissovling. Water is the UNIVERSAL SOLVENT, aqueous
If alcohol (nonpolar) is the solvent, it is called a tincture
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2. Solubility- ability of one substance to dissolve in another
- nonpolar solutes dissolve in nonpolar solvents
- polar solutes dissolve in polar solvents
- ionic solutes dissolve in polar solvents
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2. Solubility- “Like Dissolves Like” Rule
- solute and solvent must be chemically compatible
- must have similar IMFA so the solute is attracted to the
solvent and vice verse
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p. 78 1.
BrBrNonpolar MoleculeLondon Forces
Is Br2 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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2.
H S
H Nonpolar MoleculeLondon Forces
Is H2S soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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3.
H P
H
H
Nonpolar MoleculeLondon Forces
Is PH3 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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4.
H Ge
H
H
H
Nonpolar MoleculeLondon Forces
Is GeH4 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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Polar MoleculeDipole-Dipole
5.
Cl S
Cl+-
+
-
Is SCl2 soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
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1.
Page 82
Se C Se
Nonpolar MoleculeLondon Forces
Is CSe2 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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2.
AsCl
ClCl
Cl
Cl
+-
Nonpolar MoleculeLondon Forces
Is AsCl5 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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3.
B
I
II
+
-
Nonpolar MoleculeLondon Forces
Is BI3 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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4.
N O+ -
+
-
Polar MoleculeDipole-Dipole
Is NO soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
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5.
F Rn F+ -
Nonpolar MoleculeLondon Forces
Is RnF2 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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p. 86
1. FBr + -
+
-
Polar MoleculeDipole-Dipole
Is BrF soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
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2.
B
Br
BrBr
+
-
Nonpolar MoleculeLondon Forces
Is BBr3 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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3.
Ge ClCl
Cl
Cl
+ -
Nonpolar MoleculeLondon Forces
Is GeCl4 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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Nonpolar MoleculeLondon Forces
4.
AsBr
BrBr
Br
Br
+-
Is AsBr5 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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Nonpolar MoleculeLondon Forces
5.
SF
F
FF
FF
-
+
Is SF6 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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Polar MoleculeDipole-Dipole Attractions
Is ClF3 soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
p. 94
1.
ClF
F
F
+-
+-
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Nonpolar MoleculeLondon Forces
2.
PBr
BrBr
Br
Br
+-
Is PBr5 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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Nonpolar MoleculeLondon Forces
6.
Se P
Se
Is PSe2 soluble or insoluble in water?Insoluble, it is nonpolar and water is polar so there are no IMFAs between them.
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Polar MoleculeDipole-Dipole Attractions
Is RnCl6 soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
3.
RnCl
Cl
ClCl
ClCl
-
+
+
-
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Polar MoleculeDipole-Dipole Attractions
Is IF5 soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
4.
IF
F
FF
F
-
+
+
-
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Polar MoleculeDipole-Dipole Attractions
5.
Is POBr soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
P-O 1.4
P-Br 0.7
OP
Br+
- -+
+
-
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Polar MoleculeDipole-Dipole Attractions
6.
Is COCl2 soluble or insoluble in water?Soluble, it is polar and water is polar so there are dipole-dipole attractions between them.
C-O 1.0
C-Cl 0.5-
+
O
CCl
+-
-+
Cl-
+
Assignment p. 96 and Invest. 09