Qualification > Sciences
Chemistry Paper 5 question
TJ-56:
--- Quote from: Ria.khan on May 15, 2011, 07:34:47 pm ---hey!
I was wondering if there is anything specific we need to know for p5 prep apart from practicing the past papers that is!
--- End quote ---
Actually I just went through the past papers (solved them twice) and I don't think there is anything else to do, just practice and concentrate full on those papers.
leebux101:
well what i did is that for preventing overheating, i would stop the fire once temperature reaches a constant value, becuase at the boiling point, temperature remains constant, you should just write this on the side, i suppose
secondly the marking scheme says that u cant use a water bath but an oil bath and heating mantle are ok << i dont know what those are so i am gonna stick with a good old bunsen burner
and position the thermometer such that half the bulb is in the water and half is above the water, this is because it is an equlibrium, use a beaker on a tripod to contain the water , label the beaker as 250 cm^3 and use a thermometer from range -10C to 110C
do not cover the beaker with a lid ok?
i hope that answers ur question.
thankyou for the +rep! =D
leebux101:
pastpapers is the best thing for paper 5s, just do all and revise ur mistakes. =D
TJ-56:
--- Quote from: leebux101 on May 15, 2011, 07:42:14 pm ---well what i did is that for preventing overheating, i would stop the fire once temperature reaches a constant value, becuase at the boiling point, temperature remains constant, you should just write this on the side, i suppose
secondly the marking scheme says that u cant use a water bath but an oil bath and heating mantle are ok << i dont know what those are so i am gonna stick with a good old bunsen burner
and position the thermometer such that half the bulb is in the water and half is above the water, this is because it is an equlibrium, use a beaker on a tripod to contain the water , label the beaker as 250 cm^3 and use a thermometer from range -10C to 110C
do not cover the beaker with a lid ok?
i hope that answers ur question.
thankyou for the +rep! =D
--- End quote ---
Your first 2 sentences answered my question thank you ;) . And for the rest, I have them exactly correct, its good to make sure of that.
No problem, its the least I can do :)
TJ-56:
And I repeated the graph and I got a gradient of 0.69, and it did the trick.
I cant believe 0.69 gives us an x-value of 0.52 but 0.70 gives us a 0.34 :S I hope something like that won't come tomorrow.
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