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Organic Chemistry LAB > Experiment #10: Solubility Of Organic Compound > Flashcards

Experiment #10: Solubility Of Organic Compound Flashcards

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1
Q

It is the chemical behavior of a compound depends on the type of bonds present in the molecule

A

Solubility

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2
Q

*

TRUE OR FALSE:

Standard Chemical Tests for the different functional groups have been developed to be carried out easily and quickly

A

TRUE

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3
Q

What are the signs that a compound is positive?

A
  • Change in Color
  • Evolution of Gas
  • Development of Odor
  • Formation of Precipitate
  • Changes in Color of Litmus Paper
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4
Q

It is the first step in identification of functional groups

A

Solubility Test

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5
Q

TRUE OR FALSE:

Organic compounds are grouped according to their solubility in water, ether, 5% NaOH, 5% NaHCO, 5% HCl, and Concentrated H2SO4

A

TRUE

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6
Q

TRUE OR FALSE:

Solubility can be expressed as g solute/200mL solvent at a specific temperature

A

FALSE; it can be expressed as g solute/100mL solvent

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7
Q

What are the factors that can affect the solubility?

A
  • Nature of Solute and Solvent
  • Temperature
  • pH level
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8
Q

What is the solubility of acetic acid in water?

A

Soluble (Miscible)

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9
Q

What is the reason why acetic acid is soluble?

A

Hydrophilic end forms H-bond with water

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10
Q

What is the solubility of acetic acid in ether?

A

Insoluble

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11
Q

What is the solubility of benzoic acid in water?

A

Insoluble; because its carbon is greater than 5

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12
Q

What is the solubility of acetic acid in pet ether?

A

miscible

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13
Q

What is the solubility of sodium benzoate in water?

A

Soluble; because of ion-dipole interaction

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14
Q

Is cyclohexanol miscible in water?

A

NO; it is immiscible

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15
Q

What is the solubility of sodium benzoate in ether?

A

Insoluble; non-polar, no charges

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16
Q

Is glucose in water soluble?

A

YES; because it is polyhydroxylated, making it completely solvate

17
Q

What is the solubility of glucose in ether?

A

Insoluble; because it has many hydroxy and ether is non polar while glucose is polar

17
Q

Is cellulose in water insoluble?

A

YES; because it is a polymer

17
Q

Is cellulose in ether soluble?

A

NO; it is insoluble because it has many hydrophilic portions (non-polar)

18
Q

TRUE OR FALSE:

If there are more hydrophilic portions, there is a higher solubility in polar solvent

A

TRUE

19
Q

TRUE OR FALSE:

If there are more hydrophobic portions, there is a higher solubility in organic solvent

A

TRUE

20
Q

TRUE OR FALSE:

If there is a high degree of branching and Weak IMFA of solute, there is a low solubility in solvent

A

FALSE; there is a high solubility in solvent if there is a high degree of branching and weak IMFA of solute

Organic Chemistry LAB (10 decks)

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