#ChemistryForm4 #Experiment4_2 #Group1Reactivity #SPMChemistry #AlkaliMetals 🧪 Chemistry Form 4: Experiment 4.2 – Halogen Displacement Reactions Which halogen is the strongest oxidising agent?
Here’s a clear and engaging post about based on the typical Malaysian SPM curriculum (KSSM). The experiment usually focuses on Periodic Table – Reactivity of Group 1 (Alkali Metals) or Group 17 (Halogens) .
Halogens are toxic & corrosive – work in a fume hood or well-ventilated area. experiment 4.2 chemistry form 4
Wear goggles & use small pieces only. Potassium reacts violently!
Reactivity decreases down Group 17: Cl > Br > I Chlorine can displace bromine & iodine; bromine can displace iodine only. Halogens are toxic & corrosive – work in
Cl₂(aq) + 2KBr(aq) → 2KCl(aq) + Br₂(aq)
#ChemistryForm4 #Experiment4_2 #Halogens #DisplacementReaction #SPM Reactivity decreases down Group 17: Cl > Br
| Halogen \ Halide | KCl | KBr | KI | |----------------|-----|-----|-----| | Chlorine water | No reaction | Turns orange (Brâ‚‚) | Turns brown (Iâ‚‚) | | Bromine water | No reaction | No reaction | Turns brown (Iâ‚‚) | | Iodine water | No reaction | No reaction | No reaction |
To investigate the reactivity of Group 1 elements (Li, Na, K) with water & oxygen.