Compound and molarity of solution Is the substance ionic or covalent? Number of

Question

Compound and molarity of solution Is the substance ionic or covalent? Number of particles in solution from each solute molecule. (If ionic identify the ions.) M of particles in the resulting solution (M of soln x # of particles) 1.02 M NaCl ionic 2 (one Na+ and one Cl- ion) 2.04 M ions 0.38 M C6H12O6 covalent 1 0.38 M molecules 0.75 M Na2SO4 1.2 M C2H6O 0.76 M C12H22O11 1.58 M NH3 1.57 M NH4Cl 0.18 M CaCO3 0.67 M K2Cr2O7 0.88 M CH3COCH3 1.20 M Na2CrO4 1.25 M LiC2H3O2 2.15 M C7H16 Compound and molarity of solution Is the substance ionic or covalent? Number of particles in solution from each solute molecule. (If ionic identify the ions.) M of particles in the resulting solution (M of soln x # of particles) 1.02 M NaCl ionic 2 (one Na+ and one Cl- ion) 2.04 M ions 0.38 M C6H12O6 covalent 1 0.38 M molecules 0.75 M Na2SO4 1.2 M C2H6O 0.76 M C12H22O11 1.58 M NH3 1.57 M NH4Cl 0.18 M CaCO3 0.67 M K2Cr2O7 0.88 M CH3COCH3 1.20 M Na2CrO4 1.25 M LiC2H3O2 2.15 M C7H16

Explanation / Answer

Answer:

Compound and molarity of solution

Is the substance ionic or covalent?

Number of particles in solution from each solute molecule. (If ionic identify the ions.)

M of particles in the resulting solution (M of soln x # of particles)

1.02 M NaCl

ionic

2 (one Na+ and one Cl- ion)

2.04 M ions

0.38 M C6H12O6

covalent

1

0.38 M molecules

0.75 M Na2SO4

Na2SO4 -----> 2Na+ + SO42-.

Ionic

3 (2Na+ and 1 SO42-)

3 x 0.75 = 2.25 M ions

1.2 M C2H6O

Covalent (Ether of alcohol)

1

1.2 M molecules

0.76 M C12H22O11

Covalent (Disaccharide)

1

0.76M molecules

1.58 M NH3

Covalent

1

1.58M molecules

1.57 M NH4Cl

NH4Cl -----> NH4+ + Cl-.

Ionic

2 (1NH4+ and Cl-)

2 x 1.57 = 3.14 M ions

0.18 M CaCO3

CaCO3 -----> Ca2+ + CO32-.

Ionic

2 (1 Ca2+ and 1 CO32-.)

2 x 0.18 = 0.36 M ions

0.67 M K2Cr2O7

K2Cr2O7 ------> 2K+ + Cr2O72-.

3 (2K+ and 1 Cr2O72-)

3 x 0.67 = 2.01M ions

0.88 M CH3COCH3

Covalent (Acetone)

1

0.88 M molecules

1.20 M Na2CrO4

Ionic

Na2CrO4 ------> 2Na+ + CrO42-.

3 (2 Na+ and 1 CrO42-.)

3 x 1.20 = 3.60M ions

1.25 M LiC2H3O2

Ionic

LiC2H3O2 ------> Li+ + C2H3O2-.

2(1 Li+ and 1 C2H3O2-.)

2 x 1.25 = 2.50 M ions

2.15 M C7H16

Covalent(one of the isomers of Heptane)

1

2.15M molecules.

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Compound and molarity of solution

Is the substance ionic or covalent?

Number of particles in solution from each solute molecule. (If ionic identify the ions.)

M of particles in the resulting solution (M of soln x # of particles)

1.02 M NaCl

ionic

2 (one Na+ and one Cl- ion)

2.04 M ions

0.38 M C6H12O6

covalent

1

0.38 M molecules

0.75 M Na2SO4

Na2SO4 -----> 2Na+ + SO42-.

Ionic

3 (2Na+ and 1 SO42-)

3 x 0.75 = 2.25 M ions

1.2 M C2H6O

Covalent (Ether of alcohol)

1

1.2 M molecules

0.76 M C12H22O11

Covalent (Disaccharide)

1

0.76M molecules

1.58 M NH3

Covalent

1

1.58M molecules

1.57 M NH4Cl

NH4Cl -----> NH4+ + Cl-.

Ionic

2 (1NH4+ and Cl-)

2 x 1.57 = 3.14 M ions

0.18 M CaCO3

CaCO3 -----> Ca2+ + CO32-.

Ionic

2 (1 Ca2+ and 1 CO32-.)

2 x 0.18 = 0.36 M ions

0.67 M K2Cr2O7

K2Cr2O7 ------> 2K+ + Cr2O72-.

3 (2K+ and 1 Cr2O72-)

3 x 0.67 = 2.01M ions

0.88 M CH3COCH3

Covalent (Acetone)

1

0.88 M molecules

1.20 M Na2CrO4

Ionic

Na2CrO4 ------> 2Na+ + CrO42-.

3 (2 Na+ and 1 CrO42-.)

3 x 1.20 = 3.60M ions

1.25 M LiC2H3O2

Ionic

LiC2H3O2 ------> Li+ + C2H3O2-.

2(1 Li+ and 1 C2H3O2-.)

2 x 1.25 = 2.50 M ions

2.15 M C7H16

Covalent(one of the isomers of Heptane)

1

2.15M molecules.

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