Titration
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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What is considered inaccurate titration results?
Any result more than 0.2cm^3 away from each other
During titration where acid is in burette and alkali is in conical flaskwhen methyl orange changes from: yellow -> orange orange -> red what does it mean for the solution?
yellow -> orange - exact vol. acid, completely neutralise alkali reached orange -> red - excess acid added
why is white tile placed at base of retort stand?
• so that colour change can be seen clearly
why is burette jet below top of conical flask?
• prevent spillage of acid during titration No marks if never write “during titration” as acid does not spill on it’s own
when to 3sf? when to 2dp?
• 2dp for burette reading/titration result (2nd dp is 0/5) • 3sf at all other cases
why cannot use universal indicator, but use methyl orange? (for titration)
• Universal Indicator too many colour changes • Methyl orange ROY • colour change clear, easier to see
titration setup w/ all apparatus labelled
https://docs.google.com/document/d/1Ep_FO9CxYSFbxmf3Zqg9mgm9NNyt2enpfMDr49gufrU/edit page 4