Is SO3 an ion or a molecule? - Chemistry Stack Exchange
2017年5月17日 · For one thing, SOX3X2− S O X 3 X 2 − has two extra electrons, so it's an ion. SOX3 S O X 3 is a neutral molecule. There are a different number of electrons, so they're just different. The key is that they actually have different molecular formulae and are thus different compounds. Remember that charge counts ;)
Why is the bond order in the SO₃ molecule 1.33 and not 2?
2015年4月21日 · The bonding situation in $\ce{SO3}$ is a tough nut to understand. In a historical context this molecule belongs to the species of hypervalent molecules, that disobey the octet rule. The concept of hypervalence is still very much debated. Recently there was a question raised by ron, seeking for more guidance: Hypervalency and the octet rule.
Bent's rule for Sulfur trioxide and Sulfur dioxide
2014年9月19日 · Here, in $\ce{SO3}$, we have no lone pairs on the sulfur atom whereas, in $\ce{SO2}$, the central atom has a pair of lone electrons. According to Bent's rule, the lone pairs tend to occupy the orbital with more s-character which in turn decreases the s-character in the $\ce{S-O}$ bonds and increases the p-character.
Is the electrophile in sulfonation of benzene SO3 or SO3H+?
2018年7月2日 · The cationic intermediate can also be formed by the protonation of sulfur trioxide, $\ce{SO3}$, and another way to do sulfonations is to use concentrated sulfuric acid with $\ce{SO3}$ added. These solutions have the industrial name oleum. It is possible that the sulfonating agent in all these reactions is not protonated $\ce{SO3}$ but $\ce{SO3 ...
How is sulphur trioxide formed and why is it stable?
2018年3月27日 · $\begingroup$ For many hypervalent molecules such as SO3, stability is derived from firstly, the electronegative ligands (in this case, oxygen atoms) being able to reduce electron density accumulating in the central atom, thus minimising interelectronic repulsion within the valence shell of the central atom. Secondly, due to electronegativity ...
Mechanism of sulfur trioxide reaction with water to make sulfuric …
2017年5月8日 · $$\ce{SO3 (aq) + 3H2O (l) -> SO4^2- (aq) + 2H3O+ (aq)}$$ $\ce{SO3}$ is a strong electrophile, enough to react quickly with water, which is a relatively weak nucleophile. A water molecule is added to the structure, facilitated by the dislocation of a $\ce{S=O}$ bonding electron pair in $\ce{SO3}$ to the oxygen atom, forming the intermediate ...
What is the mechanism of chlorosulfonation of benzene?
2015年3月17日 · Typically, three molecules are involved. In concentrated SO3 or oleum, two molecules of SO3 form a transition state with the arene... it is a concerted mechanism. In sulfuric acid, the termolecular complex involves the arene, sulfuric acid, and SO3.
Which d orbitals of sulfur take part in the pi bonds of SO3?
2014年8月30日 · For the complete molecular orbitals of $\ce{SO3}$ have a look at this question and answer. Apart from this the question is incomplete. In order to determine which orbitals take part in bonding, you have to know the position of the symmetry defining elements. Otherwise the naming of the orbitals is completely interchangeable.
Why is Sulfur trioxide a neutral electrophile?
4. Sulfur is bonded to three oxygens, twice each. The sulfur in the middle technically has a formal charge of zero, but the oxygens it is bonded to are extremely electronegative (they're electron hogs), and so the sulfur atom in the middle has a partial plus charge on it. Ergo, it will be willing to accept electrons to try to compensate.
thermodynamics - Why is the heat of combustion of sulphur equal …
2020年5月11日 · Clearly + 4 is not the highest oxidation state of sulphur, then why is ∆H for $\ce{S8 + O2->SO3}$ not considered as heat of combustion thermodynamics combustion