Indicators!!!!!!!! (1 Viewer)

[kwabon]

could someone please tell me whether why phenolphthalein is right indicator to use when conducting titration when the acid is ethanoic acid and the base is sodium hydroxide???
its worth 4 marks ... so yeh could someone give me a briefing on what should i write.

thanks for ur time

 

[brenton1987]

could someone please tell me whether why phenolphthalein is right indicator to use when conducting titration when the acid is ethanoic acid and the base is sodium hydroxide???

Sodium hydroxide is a strong base while ethanoic acid is a weak acid so the resulting solution is going to be weakly basic.

Phenolphthalein has a transition range between 8.3–10.0 which is in the basic region.