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Pimpri Guru,
Near Park, Pune.
Pimpri, Pune, India - 411018
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Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
(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.
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
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
Answered on 05/01/2019 Learn CBSE
We now turn to the synthesis of glucose from noncarbohydrate precursors, a process called gluconeogenesis.
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
Class Location
Online (video chat via skype, google hangout etc)
At the Institute
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
(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.
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
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
Answered on 05/01/2019 Learn CBSE
We now turn to the synthesis of glucose from noncarbohydrate precursors, a process called gluconeogenesis.
Answered on 05/01/2019 Learn CBSE/Class 11/Science/Chemistry/Unit 11-Some p -Block Elements
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