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1 year ago

determine the strongest intermolecular force in pure samples of each of the following: a. h2o b. cf4 c. co2 d. ph3

Chemistry

2 answers:

Virty [35]1 year ago

7 0

The strongest intermolecular force is the hydrogen bond in water (H2O).

What is intermolecular force?
Intermolecular forces are those that develop between the molecules of a substance and can cause them to attract or repel one another. The type of intermolecular force that is present in the matter determines all of the material's physical and chemical properties.

Interactions between dipoles
Involvements of Ion-Dipoles
Dipole Interactions Induced by Ions
DID Interaction: Dipole Induced DID
London Forces or Dispersion Forces
These five intermolecular force types are listed above.

The intermolecular forces were in this order:
The strongest force is ion-dipole force.
the hydrogen bond
Force between dipoles
the least powerful is the dispersion force.
The strongest intermolecular force is therefore the hydrogen bond in H2O.

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Natalka [10]1 year ago

3 0

Hydrogen bond in H2O is the strongest intermolecular force.

What is intermolecular force?

Intermolecular forces are those that form between a substance's molecules and have the ability to attract and repel one another. All the physical and chemical properties depend on the type of intermolecular force present in the matter.

Dipole-Dipole Interactions

Ion-Dipole Interactions

Ion Induced Dipole Interactions

Dipole Induced Dipole Interaction

Dispersion Forces or London Forces.

These above are the five types of Intermolecular forces-

The order of the Intermolecular forces where

Ion-dipole force is the strongest

Hydrogen bond

Dipole-dipole force

and dispersion force is the weakest.

Hence, the Hydrogen bond present in H2O is the strongest intermolecular force.

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when 42.66 grams of PCl5 react with excess P4O10 the amount of product formed is 47.22 grams of POCl3. What is the percent yield

icang [17]

Percent yield or yield is mathematically defined as:

Yield = Actual amount / Theoretical amount

So to solve the yield, let us first calculate the theoretical amount of POCl3 produced. The balanced chemical reaction for this is:

6 PCl5 + P4O10 ---> 10 POCl3

Since P4O10 is stated to be supplied in large amount, then PCl5 becomes the limiting reactant.

So we calculate for POCl3 based on PCl5. To do this let us convert the amount into moles: (molar mass PCl5 = 208.24 g/mol)

n PCl5 = 42.66 grams / (208.24 g/mol)

n PCl5 = 0.205 mol

Now based on the stoichiometric ratio of the reaction:

n POCl3 = 0.205 mol (10 POCl3 / 6 PCl5)
n POCl3 = 0.3414 mol POCl3

Converting to mass (molar mass POCl3 = 153.33 g/mol)

m POCl3 = 0.3414 mol (153.33 g/mol)

m POCl3 = 52.35 g

Calculating for yield:

Yield = 47.22 g/ 52.35 g

Yield = 0.902

%Yield = 90.2 % (ANSWER)

6 0

3 years ago

What is water in a gas form

Igoryamba

water vapor. It is when water is evaporated. it can also be steam.

4 0

3 years ago

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A salt crystal has a mass 0.14mg,How many NaCl formula units does it contain?

klemol [59]

To determine the number of formula units in a sample of a compound you need to divide the number of grams by the formula mass. The formula mass of NaCl is 23 g/mol + 35.5 g/mol = 58.5 g/mol, and the number of grams of the sample is 0.14 mg * 1 g/ 1000 mg = 0.00014 g. Then the answer is 0.00014 g / 58.5 g = 2.30 * 10^ -6, which rounded to two significant figures is 2.4 * 10^ -6. So the answer is 2.4 * 10^-6 or 0.0000024

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3 years ago

What is the molarity of a solution prepared by dissolving 10.0 grams of NaOH in enough water to make a solution with a total vol

riadik2000 [5.3K]

Solution :

Molecular mass of NaOH is 23 g/mol .

So, number of moles of NaOH is given by :

$n = \dfrac{10}{40}\ mole$

Now, we know molarity is given by :

$Molarity = \dfrac{Number \ of \ moles\ of \ salute}{Volume ( in \ Liter ) }$

$M = \dfrac{10}{40\times 2.4} \ M\\\\M = 0.104 \ M$

Hence, this is the required solution.

5 0

3 years ago

000333 g fluorescein (332.32 g/mol) is dissolved in 225 ml solution of ethanol. the density of ethanol is 0.785 g/ml. what is th

andrey2020 [161]

1) Molarity

M = n / V
n: number of moles of solute
V: volume of the solution in liters

n = mass / molar mass = 0.000333 g / 332.32 g / mol = 1*10 ^ - 6 moles

V = 225 ml * 1 liter / 1000 ml = 0.225 liter

M = 10^-6 mol / 0.225 liter = 0.00000444 M

2) ppm

ppm = parts per million

grams of solute: 0.000333 g

grams of solution = volume * density = 225 ml * 0.785 g / ml = 176.625 g

ppm = [0.00033 g / 176.625 g] * 1,000,000 = 1.868 ppm

8 0

3 years ago

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