
(a)
Interpretation:
How is a fuel cell differing from other batteries has to be described.
Concept introduction:
Battery: It is a storage device used for the storage of chemical energy and for the transformation of chemical energy into electrical energy.
Rechargeable battery work because they use reaction are reversible, while non-rechargeable battery they use reactions are non-reversible.
(b)
Interpretation:
Wheather a PEM fuel cell can be rechargeable cell (or) not has to be explained.
Concept introduction:
PEM fuel cell: These cells work with a
Battery: It is a storage device used for the storage of chemical energy and for the transformation of chemical energy into electrical energy.
Rechargeable battery work because they use reaction are reversible, while non-rechargeable battery they use reactions are non-reversible.
(c)
Interpretation:
Why the combination of
Concept introduction:
A Fuel is a substance that releases energy when it gets burnt in presence of Oxygen. The phenomenon a substance getting burnt in presence of Oxygen is termed as combustion and it is exothermic process. The larger the amount of heat released per gram of a substance, greater the potential it has to be a fuel.

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Chapter 8 Solutions
Chemistry in Context
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- need help finding the product of these reactionsarrow_forwardPart 1. Draw monomer units of the following products and draw their reaction mechanism 1) Bakelite like polymer Using: Resorcinol + NaOH + Formalin 2) Polyester fiber Using a) pthalic anhydride + anhydrous sodium acetate + ethylene glycol B)pthalic anhydride + anhydrous sodium acetate + glycerol 3) Temporary cross-linked polymer Using: 4% polyvinyl alcohol+ methyl red + 4% sodium boratearrow_forwardUsing the table of Reactants and Products provided provide the correct letter that corresponds with the Carboxylic acid that is formed in the reaction below. 6 M NaOH Acid-workup WRITE THE CORRECT LETTER ONLY DO NOT WRITE EXTRA WORDS OR PHRASES A) Pool of Reagents for Part B CI B) OH C) E) CI J) racemic F) K) OH N) OH P) G) OH D) HO H) L) M) HO Q) R) CI Aarrow_forward
- In the table below, the exact chemical structures for Methyl salicylate can be represented by the letter WRITE THE CORRECT LETTER ONLY DO NOT WRITE EXTRA WORDS OR PHRASES CI B) A) E) Cl racemic F) J) CI K) N) OH P) Pool of Reagents for Part B OH OH G) L) OH D) HO H) M) HO Q) R) CIarrow_forwardDraw the stepwise mechanism for the reactionsarrow_forwardPart I. a) Draw reaction mechanism for the transformations of benzophenone to benzopinacol to benzopinaco lone b) Pinacol (2,3-dimethyl, 1-3-butanediol) on treatment w/ acid gives a mixture of pina colone (3,3-dimethyl-2-butanone) and 2, 3-dimethyl - 1,3-butadiene. Give reasonable mechanism the formation of the products Forarrow_forward
- 3. The explosive decomposition of 2 mole of TNT (2,4,6-trinitrotoluene) is shown below: Assume the C(s) is soot-basically atomic carbon (although it isn't actually atomic carbon in real life). 2 CH3 H NO2 NO2 3N2 (g)+7CO (g) + 5H₂O (g) + 7C (s) H a. Use bond dissociation energies to calculate how much AU is for this reaction in kJ/mol.arrow_forwardPart I. Draw reaction mechanism for the transformations of benzophenone to benzopinacol to benzopinaco lone and answer the ff: Pinacol (2,3-dimethyl, 1-3-butanediol) on treatment w/ acid gives a mixture of pina colone and (3,3-dimethyl-2-butanone) 2,3-dimethyl-1,3-butadiene. Give reasonable mechanism the formation of the products Forarrow_forwardShow the mechanism for these reactionsarrow_forward
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