• It's like a party sign that lights up when you've added just the right amount of punch! 🍹
• Technically, it should have a transition range including the pH at the equivalence point of a titration.

Strong Acid + Strong Base 🧪🔥

• Equivalence pH? 7 (Balanced party!)
• Best Indicator? Bromothymol blue (changes colour at pH 6.0-7.6)
  • Other guests? Almost any common indicator would do because of the massive pH leap at the party’s equivalence point!

Weak Acid + Strong Base 🧪💧

• Equivalence pH? > 7 (Base-y party!)
• Best Indicator? Phenolphthalein (changes colour at pH > 7)
  • Bromothymol blue? Can join! But leave Methyl orange out, it's a party pooper.

Strong Acid + Weak Base 🧪🌬

• Equivalence pH? < 7 (Acidic party!)
• Best Indicator? Methyl orange. But Methyl red with pH 4.4-6.2 might be an even cooler guest!
  • Phenolphthalein? Nope, not invited.

• Too much indicator? It's like adding too much salt to your fries 🍟 – ruins the result.
• Too little indicator? It's like trying to read in the dark 🌚 – can't see the colour change.
• Aim? Just enough indicator to see the change, but not so much it skews the result.

• This is a super-chill party 🍵. The pH changes so subtly, acid-base indicators just don't catch the vibe.
• Solution? Use a pH meter (it's like the DJ 🎧 for this party) to find the equivalence point!