The characteristic odor of pineapple is due to ethyl butyrate, an organic compound which contains only carbon, hydrogen and oxygen. If a sample of ethyl butyrate is known to contain 0.62069 g of carbon, 0.103448 g of hydrogen and 0.275862 g of oxygen, what is the empirical formula for ethyl butyrate?

C3H6O

Explanation:

Data obtained from the question. This includes:

Carbon (C) = 0.62069 g

Hydrogen (H) = 0.103448 g

Oxygen (O) = 0.275862 g

The empirical formula can be obtained as follow:

Step 1:

Divide by their molar mass.

C = 0.62069 / 12 = 0.0517

H = 0.103448 / 1 = 0.103448

O = 0.275862 / 16 = 0.0172

Step 2:

Divide by the smallest number.

C = 0.0517 / 0.0172 = 3

H = 0.103448 / 0.0172 = 6

O = 0.0172 / 0.0172 = 1

Step 3:

Writing the empirical formula.

The empirical formula is C3H6O

The empirical formula is C3H6O

Explanation:

Step 1: Data given

A sample of ethyl butyrate contains:

0.62069 g of carbon

0.103448 g of hydrogen

0.275862 g of oxygen

Atomic mass of carbon = 12.01 g/mol

Atomic mass of hydrogen = 1.01 g/mol

Atomic mass of oxygen = 16.0 g/mol

Step 2: Calculate moles

Moles = mass / molar mass

Moles carbon = 0.62069 grams / 12.01 g/mol

Moles carbon = 0.0517 moles

Moles hydrogen = 0.103448 grams / 1.01 g/mol

Moles hydrogen = 0.1024 moles

Moles oxygen = 0.275862 grams / 16.0 g/mol

Moles oxygen = 0.0172 moles

Step 3: Calculate the mol ratio

We divide by the smalllest amount of moles

C: 0.0517 moles / 0.0172 moles = 3

H: 0.1024 moles / 0.0172 moles = 6

O: 0.0172 moles / 0.0172 moles = 1

The empirical formula is C3H6O

it is stable as it is in group 0 which have full outer shells of electrons

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.