ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: kenhung123 on June 05, 2010, 03:43:18 pm
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Like in general how specific do you need to be in explain questions?
For e.g. If a question asks what happens when the titre in burette is diluted without knowing (a error)
- More titre would be required to complete reaction thus higher expected result calculated
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-Thus the calculate moles in titre that reacted increases
- We use this value to calculate the number of moles in aliquot
- If the mole calculation in the titre increases then the number of moles calculated in aliquot increases too
As you can see the 1st answer is already quite straight forward for an average chemistry student. But the 2nd answer is very precise and easy to understand and kind of like explaining it to someone who never heard of titration before. Should I answer like the above and assume the examiners know what RESULTS from that or I need to explain HOW that results?
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Basically depends on how many marks are involved, and what the question is actually asking. In general, all those error questions only want you to state the ultimate effect on the calculated value, so what you've given in your first answer is sufficient.
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Just don't say "Error X causes the calculated value to be inaccurate", you need to specify wheher calculator value is higher or lower.
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Don't start another titre thread. Please. Jesus won't love you if you do . ::)
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Don't start another titre thread. Please. Jesus won't love you if you do . ::)
LOL, last night was terrible... We kept working out a way, but ended up sticking with our original methods :P
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hahahaha its like trying to find another innovative way to do calculus..............................................................................
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yeah no.