Malus Coaching Classes

(a) When silicon reacts with methyl chloride in the presence of copper (catalyst) and at a temperature of about 537 K, a class of organosilicon polymers called methyl-substituted chlorosilanes are formed. Examples,  

(b) When silicon dioxide ( ) is heated with hydrogen fluoride (HF), it forms silicon tetrafluoride ( ). Usually, the Si-O bond is a strong bond and it resists any attack by halogens and most acids, even at a high temperature. However, it is attacked by HF.

The formed in this reaction can further react with HF to form hydrofluorosilicic acid.

(c) When CO reacts with ZnO, it reduces ZnO to Zn. CO acts as a reducing agent.

(d) When hydrated alumina is added to sodium hydroxide, the former dissolves in the latter because of the formation of sodium meta-aluminate.

The elements of group 14 have 4 electron’s in the outermost shell i.e valence shell hence the oxidation state of the group is +4

As the result of the inert pair effect the lower oxidation state becomes more and more stable and opposite things happen on the other hand the highest oxidation state becomes less and less stable

Therefore the group has oxidation state from +4 to +2

C (carbon) = oxidation state +4
Si (silicon) = oxidation state +4
Sn, Pb (lead) = oxidation state +2,+4

We now turn to the synthesis of glucose from noncarbohydrate precursors, a process called gluconeogenesis. ... Noncarbohydrate precursors of glucose are first converted into pyruvate or enter the pathway at later intermediates such as oxaloacetate and dihydroxyacetone phosphate