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Chemistry P4| A2 only
can any one pls help with the q how is it 1st order with respect to H+..... -
Chemistry P4| A2 only
they are not out of the syllabus .... itis just tht the equations are twisted up.....just to confuse us a little bit.....i feel tht tooo but if u try out the equations ull find it easy ...really u maight t ake a lill time to work over it...but ull succeed -
Chemistry P4| A2 only
ok ...can nybody tell me wht do u mean by delocalisation of lone pair on pi bond of the benzene ring -
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Chemistry P4| A2 only
can some body wht is partition coeffficient an explain it ........or give me a link related to it :) -
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CHEMISTRY PAPER 34 (PRACTICALS)
During calculations, answers which haven't been finalised may be written in 4 or 5 sf (significant figures). Only the final answer for the question need to be rounded up to 2sf or 3sf. If unsure with the significant figures needed for the answer, put 3sf instead. Approximation sign (≈) cannot be... -
CHEMISTRY PAPER 34 (PRACTICALS)
Adding 1cm3 reagent is considered "equal amount". Measurement more than 2cm3 is considered excess. Take notes of the cations Pb2+, Al3+ & Zn2+. These 3 amphoteric ions exhibits special observations in order to deduce the ions. The ions will form white pptupon adding NaOH drop by drop, and will... -
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CHEMISTRY PAPER 34 (PRACTICALS)
A white tile is provided for better observation to spot the colour change during titration. The burette and pipette have to be rinsed with the solution before use to avoid any contamination and inaccuracy measurement of the solutions used. Value for rough titration is always greater than... -
CHEMISTRY PAPER 34 (PRACTICALS)
there are these sites which are helpful.....so am posting it.... Burette: http://www.creative-chemistry.org.uk/alevel/module1/documents/N-ch1-23.pdf Estimating errors in chem: http://www.creative-chemistry.org.uk/alevel/module1/documents/N-ch1-24.pdf An idea of how to draw and not... -
CHEMISTRY PAPER 34 (PRACTICALS)
should be thorough with stociometry....in case the Q is titration.... test for aldehydes.... test for gases...but thts given so no need ....how to %error of burette and all..... and read the thoery part of redox reactions and know its concept...\ oxidation and reduction of alcohols aldehydes... -
CHEMISTRY PAPER 34 (PRACTICALS)
HI well i couldnt find any thread related to this so i made it......:p well i hope everybody can try and help out 1 another here... -
Chemistry: Post your doubts here!
hw was p5 an p2 guyzz? i liked both of it:giggle: p5 was lengthy,and p2 was short -
AS Chemistry P2 Prep.
hw was the paper guyzzzzz??// mine was good ....there were just 4 qs.....wowww;) -
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