Fuel cell is to be defined and how it is different from a battery is to be explained. Concept introduction: Fuel cell is an electrochemical cell and it converts the potential energy into electricity through an electrochemical reaction of hydrogen fuel with oxygen. Oxidation is the addition of an electronegative element or the removal of an electropositive element in a chemical reaction . Reduction is the addition of an electropositive element or the removal of an electronegative element in a chemical reaction. Electrolysis is the process in which a reaction takes place at electrodes. The positively charged electrode is called anode. The negatively charged electrode is called cathode. During electrolysis, reduction takes place at the cathode and oxidation takes place at the anode.

Question

bre The reaction sequence shown in Scheme 5 demonstrates the synthesis of a substituted benzene derivative Q. wolsd works 2 NH2 NaNO2, HCI (apexe) 13× (1 HNO3, H2SO4 C6H5CIN2 0°C HOTE CHINO₂ N O *O₂H ( PO Q Я Scheme 5 2 bag abouoqmics to sounde odi WEIC (i) Draw the structure of intermediate O. [2 marks] to noitsmot od: tot meinedogm, noit so oft listsb ni zaupaib bas wa (ii) Draw the mechanism for the transformation of aniline N to intermediate O. Spoilage (b) [6 marks] (iii) Identify the reagent X used to convert compound O to the iodinated compound [tom E P. vueimado oilovonsa ni moitos nolisbnolov ayd toes ai tedw nisiqx (iv) Identify the possible structures of compound Q. [2 marks] [2 marks] [shom 2] (v) bus noires goiribbeolovo xnivollot adj to subora sidab Draw the mechanism for the transformation of intermediate P to compound Q. [5 marks] vi (vi) Account for the regiochemical outcome observed in the reaction forming compound Q. [3 marks]

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Question

Chapter 14, Problem 15E

Interpretation Introduction

Interpretation:

Fuel cell is to be defined and how it is different from a battery is to be explained.

Concept introduction:

Fuel cell is an electrochemical cell and it converts the potential energy into electricity through an electrochemical reaction of hydrogen fuel with oxygen.

Oxidation is the addition of an electronegative element or the removal of an electropositive element in a chemical reaction.

Reduction is the addition of an electropositive element or the removal of an electronegative element in a chemical reaction.

Electrolysis is the process in which a reaction takes place at electrodes. The positively charged electrode is called anode. The negatively charged electrode is called cathode. During electrolysis, reduction takes place at the cathode and oxidation takes place at the anode.

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bre The reaction sequence shown in Scheme 5 demonstrates the synthesis of a substituted benzene derivative Q. wolsd works 2 NH2 NaNO2, HCI (apexe) 13× (1 HNO3, H2SO4 C6H5CIN2 0°C HOTE CHINO₂ N O *O₂H ( PO Q Я Scheme 5 2 bag abouoqmics to sounde odi WEIC (i) Draw the structure of intermediate O. [2 marks] to noitsmot od: tot meinedogm, noit so oft listsb ni zaupaib bas wa (ii) Draw the mechanism for the transformation of aniline N to intermediate O. Spoilage (b) [6 marks] (iii) Identify the reagent X used to convert compound O to the iodinated compound [tom E P. vueimado oilovonsa ni moitos nolisbnolov ayd toes ai tedw nisiqx (iv) Identify the possible structures of compound Q. [2 marks] [2 marks] [shom 2] (v) bus noires goiribbeolovo xnivollot adj to subora sidab Draw the mechanism for the transformation of intermediate P to compound Q. [5 marks] vi (vi) Account for the regiochemical outcome observed in the reaction forming compound Q. [3 marks]

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