Compounds A to I all contain chlorine. [VISUAL] — Physical Chemistry Chemistry Question
Chlorine compounds
Compounds A to I all contain chlorine.
[VISUAL]
Identify A to I and write balanced equations for the following reactions:
A + H2O → C + HCl
B + H2O → C
B → D + HCl
E → F + G
Model Answer
A: Cl2
B: Cl2O
C: HClO
D: HClO3
E: Ba(ClO3)2
F: BaCl2
G: Ba(ClO4)2
H: ClO2
Chemical equations:
Cl2 (A) + H2O → HClO (C) + HCl
Cl2O (B) + H2O → 2 HClO (C)
3 HClO (C) → HClO3 (D) + 2 HCl
4 Ba(ClO3)2 (E) → BaCl2 (F) + 3 Ba(ClO4)2 (G)
Predict the structures of B, D, F and H, and comment on points of interest in the structure of H.
Model Answer
B: bent molecule Cl-O-Cl
D: trigonal pyramidal Cl(O)3 with hydrogen atom bounded to one oxygen atom
F: BaCl2 is an ionic compound. It consists of cations Ba2+ and anions Cl-. It crystallizes in two forms (polymorphs): cubic and orthorhombic.
H: bent molecule O-Cl-O
Comment on the conditions used in the sequence of reactions:
B + H2O → C + HCl
C → D + HCl
C → F + G
Model Answer
A + H2O → C + HCl (occurs at 25°C)
C → D + HCl (occurs at 70°C)
E → F + G (occurs with heat)