(2hcl + k2so4 → h2so2 + 2 kch
how many grams/sulfuric acid will be produced if 100g
of hydrochloric acid is used?

Mass = 134.4 g

Explanation:

Given data:

Mass of hydrochloric acid = 100 g

Mass of sulfuric acid produced = ?

Solution:

Chemical equation:

2HCl + K₂SO₄   →    H₂SO₄ + 2KCl

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles = 100 g/ 36.5 g/mol

Number of moles = 2.74 mol

Now we will compare the moles of HCl with H₂SO₄

               HCl            :              H₂SO₄    

                 2              :                 1

                 2.74         :             1/2×2.74 = 1.37 mol

Mass of  H₂SO₄:

Mass = number of moles × molar mass

Mass =  1.37 mol × 98.1 g/mol

Mass = 134.4 g

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8