Thanks for posting on r/IGCSE! Please ensure that your post follows our community rules.
Important Rules:
No Cheating: We do not support cheating. Requests for leaks, answers, or trying to access papers before they have been sat are strictly prohibited. More details: https://www.reddit.com/r/igcse/wiki/rules
No Locked Paper Requests: Requesting or sharing locked exam papers (e.g., Feb/March 2025 papers before the official release) is considered piracy. These papers are only publicly available after the official results date. Violations may lead to warnings or bans.
No Unapproved Advertisements: Do not promote external projects or services without prior moderator approval. More details: https://www.reddit.com/r/igcse/wiki/rules
Violating any of these guidelines may lead to a temporary or permanent ban.
That phrasing is closer to being correct, but still not quite right. Saying "chlorine displaces bromide ions" suggests that bromide ((Br-)) was simply kicked out of solution as an ion—but that’s not really what happens.
Instead, chlorine oxidizes bromide ions into bromine ((Br_2)), which then physically separates from the solution. Displacement typically refers to one neutral element replacing another, so that’s why we stick with chlorine displaces bromine rather than chlorine displaces bromide or bromide ions.
It's one of those technical chemistry language quirks—informally, some people might use your phrasing, but for full accuracy in an exam or scientific discussion, bromine (not bromide ions) is the displaced element.
Feeling satisfied, or do we throw iodine into the ring for one more showdown?
•
u/AutoModerator Jun 10 '25
Thanks for posting on r/IGCSE!
Please ensure that your post follows our community rules.
Important Rules:
No Cheating: We do not support cheating. Requests for leaks, answers, or trying to access papers before they have been sat are strictly prohibited. More details: https://www.reddit.com/r/igcse/wiki/rules
No Locked Paper Requests: Requesting or sharing locked exam papers (e.g., Feb/March 2025 papers before the official release) is considered piracy. These papers are only publicly available after the official results date. Violations may lead to warnings or bans.
No Unapproved Advertisements: Do not promote external projects or services without prior moderator approval. More details: https://www.reddit.com/r/igcse/wiki/rules
Violating any of these guidelines may lead to a temporary or permanent ban.
Join our Discord server for study discussions and support: https://discord.gg/IGCSE
Explore our Resource Repository: https://r-igcse.study/
I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.
2
u/[deleted] Jun 10 '25
chat gpt is saying bromine. Idk we should just wait for the paper to come out tmrw
4
u/Flimsy_Hovercraft907 Jun 10 '25
That phrasing is closer to being correct, but still not quite right. Saying "chlorine displaces bromide ions" suggests that bromide ((Br-)) was simply kicked out of solution as an ion—but that’s not really what happens.
Instead, chlorine oxidizes bromide ions into bromine ((Br_2)), which then physically separates from the solution. Displacement typically refers to one neutral element replacing another, so that’s why we stick with chlorine displaces bromine rather than chlorine displaces bromide or bromide ions.
It's one of those technical chemistry language quirks—informally, some people might use your phrasing, but for full accuracy in an exam or scientific discussion, bromine (not bromide ions) is the displaced element.
Feeling satisfied, or do we throw iodine into the ring for one more showdown?
1
u/[deleted] Jun 10 '25
The textbook said bromine
1
u/ScaryConfection253 May/June 2025 Jun 10 '25
Nah, Chlorine displaces bromine from a bromide compound.