Density, Molecular Weights, Limiting Reagent, and Theoretical Yield

Density, Molecular Weights, Limiting Reagent, and

Theoretical Yield

To solve this question, you would need actual experimental

data

mass of reactants used, chemical identities, and reaction

equation

Density, Molecular Weights, Limiting Reagent, and

Theoretical Yield

To solve this question, you would need actual experimental

data (3)

molecular weights

Find _ from the periodic table or

chemical database.

1

Find molecular weights from the periodic table or

chemical database.

moles

Convert masses to _

2

Convert masses to moles

Identify limiting reagent based on stoichiometry

from the balanced equation.

Identify _ based on stoichiometry

from the balanced equation.

3

Identify limiting reagent based on stoichiometry

from the balanced equation.

theoretical yield

Calculate _ based on the limiting

reagent and product stoichiometry:

4

Calculate theoretical yield based on the limiting

reagent and product stoichiometry:

Density

_ is only needed if you're converting between

volume and mass for liquids:

volume and mass

Density is only needed if you're converting between

_ 2 for liquids:

Activated charcoal

is added to remove colored impurities from

the hot solution during recrystallization.

Activated charcoal

It works by adsorbing

large organic molecules (like dyes or by-products) onto its

porous surface.

recrystallization

Activated charcoal is added to remove colored impurities from

the hot solution during _.

large organic molecules

Activated charcoal works by adsorbing

_ (like dyes or by-products) onto its

porous surface.

dyes or by-products

Activated charcoal works by adsorbing

large organic molecules (like _ 2) onto its

porous surface.

porous

Activated charcoal works by adsorbing

large organic molecules (like dyes or by-products) onto its

_ surface.

Only a small amount is used because too

much can adsorb the product itself.

Only a small amount is used because too

much can adsorb the product itself.

hot

filtration

Activated charcoal

It is added before - to allow removal of both the charcoal and the bound

impurities.

charcoal; impurities

Activated charcoal

It is added before hot

filtration to allow removal of both the _ and the bound

_.

Activated charcoal

It is added before hot

filtration to allow removal of both the charcoal and the bound

impurities.

acetanilide

The theoretical or literature melting point of pure _ is

113-115 degree Celsius

113-115 degree Celsius

The theoretical or literature melting point of pure acetanilide is

_

acetanilide

The most suitable solvent for the recrystallization of _

is hot water.

hot water

The most suitable solvent for the recrystallization of acetanilide

is _.

highly soluble

Acetanilide is sparingly soluble

in cold water but becomes _in hot water.

This is ideal for recrystallization.

Solubility behavior:

Acetanilide is sparingly soluble

in cold water but becomes highly soluble in hot water.

This is ideal for recrystallization.

recrystallization

Acetanilide is sparingly soluble

in cold water but becomes highly soluble in hot water.

This is ideal for _.

cold water

Acetanilide is sparingly soluble

in _ but becomes highly soluble in hot water.

This is ideal for recrystallization.

Acetanilide

_ is sparingly soluble

in cold water but becomes highly soluble in hot water.

This is ideal for recrystallization.

safe, readily

available, and environmentally friendly.

Water is _3

Inexpensive and non-toxic:

Water is safe, readily

available, and environmentally friendly.

effective separation

Impurities either remain in solution or do

not dissolve at all, allowing _.

solution; dissolve

Impurities either remain in _ or do

not ? at all, allowing effective separation.

Impurities

_ either remain in solution or do

not dissolve at all, allowing effective separation.

Selectivity:

Impurities either remain in solution or do

not dissolve at all, allowing effective separation.

residues

Water can be easily

removed by drying and does not leave _.

drying

Water can be easily

removed by _ and does not leave residues.

Water

_ can be easily

removed by drying and does not leave residues.

Volatility and recovery:

Water can be easily

removed by drying and does not leave residues.

Solubility behavior:

Inexpensive and non-toxic:

Selectivity:

Volatility and recovery:

The most suitable solvent for the recrystallization of acetanilide

is hot water.

Reasons:4

product

This solvent choice ensures maximum purification efficiency

with minimal loss of _.

solvent choice

This _ ensures maximum purification efficiency

with minimal loss of product.

maximum purification efficiency

This solvent choice ensures _

with minimal loss of product.

acetanilide

The theoretical melting point of pure _ is 113 to

115°C.

113 to 115°C

The theoretical melting point of pure acetanilide is _

pure

To determine purity: If your recrystallized acetanilide melts sharply within

this range, it is considered _.(113 to

115°C.)

lower; wider

To determine purity: If the melting point is _ or spans a ? range (for example, 110 to 113°C), this indicates the

presence of impurities that disrupt crystal lattice

formation.

crystal lattice

formation

To determine purity: If the melting point is lower or spans a wider range (for example, 110 to 113°C), this indicates the

presence of impurities that disrupt _.

broad melting point range

To determine purity: A _ (for example, 105 to

112°C) strongly suggests incomplete purification or

contamination.

incomplete purification or

contamination

To determine purity: A broad melting point range (for example, 105 to

112°C) strongly suggests _ 2.