Chapter 3, Problem 100EQ

The following molecule, the silicon analog of formaldehyde, has never been successfully prepared.   H2SiO or H2Si=O The following reaction was attempted by researchers in order to synthesize this unusual compound:   H2Si=S + P4O10  →   H2Si=O + P4O9S  None of the desired compound (H2Si=O) was obtained.  Instead, the following molecule was obtained:  (H2SiO)2   a molecule in which the O and Si form an  …Si-O-Si-O…  square.  Further research indicated that although  H2Si=O formed, it immediately formed  (H2SiO)2 and released a substantial amount of energy according to the reaction:   2 H2Si=O →   (H2SiO)2 + heat Based on the information above and your knowledge, what can be concluded about the relative strength of the Si-O and Si=O bonds?       Question 24 options:   A)  An Si=O bond is stronger than two Si-O bonds.     B)  An Si=O bond is weaker than two Si-O bonds.     C)  An Si-O bond has the same strength as an Si=O.…

A benzene ring alters the reactivity of a neighboring group in the so-called “benzylic” position, similarly to how a double bond alters the reactivity of groups in the “allylic” position. Benzylic cations, anions, and radicals are all more stable than simple alkyl intermediates. a) Use resonance structures to show the delocalization of the positive charge, negative charge, and unpaired electron of the benzyl cation, anion, and radical.

for part b）why do we write AlCl3 at top of the arrow and AlCl4 at the bottom of arrow？？is it any connection between the two？does it means that AlCl 4 need to be present in order to make AlCl3 reacts to the molecule and make the reaction to process？？   2. why when AlCl3 added，Cl was removed from the ring？what princeiple theory is that ？   2. when SO3 is added ，SO3 attached to the ring，why ？what principle is behind this phenamonane   3.Just confused about why AlCl3 removes Cl from the ring，while HSO3 donate SO3 to the ring. Is it Something about nucleohilic or eletrciohillic？

Calculate the heat of reaction deltaH for the following reaction: 2HCl(g)+Br2(g)——> 2HBr2(g)+ Cl2(g) Round your answer to the nearest kJ/mol.

Determine the kind of reaction from the chemical equation below: methyl bromide   +   hydroxide ion  ➡️  methyl alcohol    +    bromide ion     SN2     SN1     SN1  and SN2      neither SN1  nor SN2

Draw curved arrows to show the movement of the electrons that result in the formation of the given product(s)

Pairs of unshared electrons can be pushed. One Lewis structure for the methoxy-methyl cation is . The structure contains a pair of pushable electrons, namely, the unshared electrons on the atom. The structure also contains a positively charged atom that can act as a . A second resonance structure can be generated by pushing the unshared electrons to the receptor. Thus, It is not possible to push electrons toward the other carbon, because it is not a receptor. If you tried to push electrons to this carbon, you would generate a pentavalent carbon, which is not possible.

What reaction would acetylene likely undergo if it were kept at 1500 °C for too long?9

What are the next favourable resonance structures being asked for?