Balanced Chemical Equation – Solution
Cl2 + 2NaI → 2NaCl + I2
The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. New substances are formed as a result of the rearrangement of the original atoms. As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged – this follows from the law of conservation of mass of substances.
Chemical Reaction Information
Dichlorine + Sodium Iodide = Sodium Chloride + Diiodine
This is an oxidation-reduction (redox) reaction. Cl2 is an oxidizing agent, NaI is a reducing agent.
- 2 Cl0 + 2 e– → 2 Cl-I (reduction)
- 2 I-I – 2 e– → 2 I0 (oxidation)
Single Displacement (Substitution)
Substances that react are called starting materials or reactants. The substances that form as a result are called reaction products.
- Names: Chlorine.
- Appearance: Greenish-yellow compressed liquefied gas with pungent odour.
- Names: Sodium iodide.
- Appearance: White solid | deliquescent.
NaCl – Sodium chloride
- Appearance: Colorless cubic crystals
- Names: Iodine.
- Appearance: Bluish black or dark purple crystals with pungent odour.
|H2O + Cl2 + NaI → HCl + NaIO3|
|Cl2 + NaI → I2 + NaCl|
|Cl2 + NaI + CCl4 → I2 + NaCl + C2|