Dichloromethane has a molecular formula of CH₂Cl₂.

1) What is the molar mass of dichloromethane?

2) Draw the structure of dichloromethane using wedge and dash notation.

3) Is dichloromethane chiral? Explain.

4) Dichloromethane is synthesized in two steps: methane (CH₄) reacts with chlorine to form chloromethane, which reacts again with chlorine to give dichloromethane.
Write the chemical equation of these two steps. What is the byproduct of this reaction?

Question

Dichloromethane has a molecular formula of CH₂Cl₂.

1) What is the molar mass of dichloromethane?

2) Draw the structure of dichloromethane using wedge and dash notation.

3) Is dichloromethane chiral? Explain.

4) Dichloromethane is synthesized in two steps: methane (CH₄) reacts with chlorine to form chloromethane, which reacts again with chlorine to give dichloromethane.
Write the chemical equation of these two steps. What is the byproduct of this reaction?

| General Chemistry 1

Accepted Answer

1) M_CH2Cl2 = M_C + 2 x M_Cl2 + 2 x M_H2 = 12.01 + 2 x 35.45 + 2 x 1.01 = 84.93 g.mol^-1

2)

3) No, dichloromethane is superimposable with its mirror image (no four different substituents on the central carbon + plan of symmetry).

4) Chlorine is a diatomic molecule Cl₂

CH₄ + Cl₂ → CH₃Cl + HCl

CH₃Cl + Cl₂ → CH₂Cl₂ + HCl

The byproduct is HCl (hydrochloric acid).

Final - Question 2 | General Chemistry 1

General Chemistry 1 - Final