N2013 P2 Q3bi) Is it necessary to state that the lone pair of electrons on the oxygen atom is delocalised into the pi electron cloud of the...
N2013 P2 Q4bii) is it sufficient to just talk about the fact that iron has a smaller radius than calcium and hence greater metallic bond...
What is the reaction that increases oxygen by one?
Why are there 2 Br attached and not just 1
Why is it Q= no. Of moles of electrons x charge of 1 electron? (The part in red) shouldn’t it be Q= no. Of electrons in no of moles of...
If any JC student (not just my own BedokFunland JC students) needs help with any questions from the 2019 Singapore JCs Prelim Papers, feel free to...
satiricalsingaporean JC The reversible reaction A⇌2B has ΔH 0 and ΔS 0. It is observed that the yield of B increases as temperature...
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Why is my answer for 2c wrong? Is it due to some misconception (like assuming that all the carbonates are reacted with)?
Why do NH3 ligands cause a larger splitting?
Under what circumstances are they formed? Are there any reactions I should take note of for ethers?
In my school notes it’s written as dx^2 instead of dz^2 which one should I use?
Unable to find the value of y
Why does answer calculate using pKa= 10.31? If pH= 9, shouldn’t we use pKa= 3.67?
For the line in brackets, why isn’t OH- or Cl- reduced instead?
For 4) why does can aluminium hydroxide be soluble in excess NaOH? Coz initially when Al3+ reacts with OH- it’s product is insoluble. Is...
Hypothetically speaking, for the structure above, in the presence of nickel and hydrogen, would the -OH be reduced?
Could you explain this part to me? If not during tuition coz I’m not really clear about how a more effective shield is formed and what exactly...
why is amine a weak bronsted base? How does it differ from a strong bronsted base? What are possible examples of strong bronsted bases?
can something be both a bronsted base and a Lewis base?
Why is the second equivalence point so vertical but the first equivalence point isn’t?
Is there a reason why there are different flame colours for different elements upon heating? Na: yellow Mg: white P: yellow S: blue
For this molecule A, there are 4 degrees of unsaturation. Does it also include degree of unsaturation of benzene ring (degree of unsaturation...
how come for bii it's cannot be AlCl3? It sublimes so it's in gaseous state and give solid too.
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