Benzene, an organic solvent, has the empirical formula ch. if the molar mass of benzene is 78.11 g/mol, what is the molecular formula of benzene?

Explanation:

Molecular formula defined as the chemical formula which shows actual number of atoms of each element present in the compound.  

                        Molecular formula =

where,    n = 1, 2, 3,.....

On the other hand, empirical formula is the simplest chemical formula which shows the whole number of atoms of each element present in the compound.

Formula to calculate empirical mass of CH is as follows.

          Empirical mass = 1 × atomic mass of C + 1 × atomic mass of H

                                     = 1 × (12.01 amu) + 1 × (1.008 amu)

                                      = 13.018 amu

Hence, value of n will be calculated as follows.

                  n =

                      =

                       = 6

Thus, we can conclude that molecular formula of benzene is .

The molecular formula of benzene is C₆H₆

Explanation:

Empirical formula of benzene: C₁H₁  

Atomic mass of carbon (C) = 12.01 g/mol    

Atomic mass of hydrogen (H) = 12.01 g/mol      

Therefore, Empirical formula mass of C₁H₁ = 1 × Atomic mass of C +  1 × Atomic mass of H = 12.01 + 1.008 = 13.018 g/mol

The given molar mass of benzene = 78.11 g/mol  

Since, Molar mass = n × (Empirical formula mass)  

Therefore, n = (Molar mass) ÷ (Empirical formula mass)  

n = (78.11 g/mol) ÷ (13.018 g/mol) ≅ 6

Since, Molecular formula = (Empirical formula)ₙ

Therefore, Molecular formula of benzene = (C₁H₁)₆ = C₆H₆

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.