Why do ionic compounds dissolve well in water? Select all that are true. Questio

Question

Why do ionic compounds dissolve well in water? Select all that are true.

Question 5 options:

Because water and ionic compounds are both polar

Water molecules have partial charges that attract the ions in the solid compound, causing it to dissociate into separated ions

Because organic compounds are nonpolar

Water molecules can surround an ion, and neutralize the ion's charge using either it's partial positive or negative side.

The individual ions are solvated by water molecules which stabilizes the ions

2. Which compound is soluble in ether but not soluble in aqueous sodium hydroxide?

Question 2 options:

ArOH

Ar

ArCOOH

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When you have a two-layer mixture of water and tert-butyl methyl ether, what physical property of these liquids assures you that the ether is the top layer?

Question 4 options:

low density    was my answer was

You perform each extraction twice, first with 1 mL and second with 0.15 mL. Why is the second extraction necessary?

Question 8 options:

several small extractions is better than one large one

to remove any orgnaic material contaninating tube 2

to remove any remaining neutral compound

7. Which of the following reactions is not favorable?

Question 7 options:

ArCOOH + NaOH ArCOO-Na+ + H2O

ArOH + NaHCO3 ArO-Na+ + CO2 + H2O

ArCOOH + NaHCO3 ArCOO-Na+ + CO2 + H2O

9.Why is phenol more acidic than an aliphatic alcohol?

Question 9 options:

Its conjugates base’s negative charge is localized on the oxygen

Phenols have a stronger O-H bond

Only the phenol can form hydrogen bonds

Its conjugated base is stabilized by resonance

Which aqueous base reacts with a carboxylic acid but not with phenol? Why?

Question 10 options:

Sodium bicarbonate, it is a weaker base and will only react with strong acids

Sodium hydroxide, it is a strong base and will only react with strong acids

Sodium bicarbonate, it is a weak base and will only react with weak acids

Sodium hydroxide, it is a strong base and will only react with weak acids

Because water and ionic compounds are both polar

Water molecules have partial charges that attract the ions in the solid compound, causing it to dissociate into separated ions

Because organic compounds are nonpolar

Water molecules can surround an ion, and neutralize the ion's charge using either it's partial positive or negative side.

The individual ions are solvated by water molecules which stabilizes the ions

2. Which compound is soluble in ether but not soluble in aqueous sodium hydroxide?

Question 2 options:

ArOH

Ar

ArCOOH

Save

When you have a two-layer mixture of water and tert-butyl methyl ether, what physical property of these liquids assures you that the ether is the top layer?

Question 4 options:

low density    was my answer was

You perform each extraction twice, first with 1 mL and second with 0.15 mL. Why is the second extraction necessary?

Question 8 options:

several small extractions is better than one large one

to remove any orgnaic material contaninating tube 2

to remove any remaining neutral compound

7. Which of the following reactions is not favorable?

Question 7 options:

ArCOOH + NaOH ArCOO-Na+ + H2O

ArOH + NaHCO3 ArO-Na+ + CO2 + H2O

ArCOOH + NaHCO3 ArCOO-Na+ + CO2 + H2O

9.Why is phenol more acidic than an aliphatic alcohol?

Question 9 options:

Its conjugates base’s negative charge is localized on the oxygen

Phenols have a stronger O-H bond

Only the phenol can form hydrogen bonds

Its conjugated base is stabilized by resonance

Which aqueous base reacts with a carboxylic acid but not with phenol? Why?

Question 10 options:

Sodium bicarbonate, it is a weaker base and will only react with strong acids

Sodium hydroxide, it is a strong base and will only react with strong acids

Sodium bicarbonate, it is a weak base and will only react with weak acids

Sodium hydroxide, it is a strong base and will only react with weak acids

Explanation / Answer

1. Water molecules can surround an ion and neutralize the ions charge using either its partial positive or negative charge

The individual ions are solvated by water molecules which stabilizes the ions

Because water n ionic compounds both are polar

2. Ether will dissolve Ar but not soluble in aq NaOH

3. Low density makes it lighter than water thus water layer is at the bottom

4. Sevral small extraction are better than one large one, totremove as much of solute from aqueous layer

7. The option 2 is not possible

Aroh +NaHCO3 - - > Arona +CO2 + H2O

9. It's conjugates base is stabilized by resonance

10. Sodium bicarbonate it is a weaker base reacts only with strong acids

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