A) \[0.05M\,KCl{{O}_{4}}+0.05M\,HCl{{O}_{4}}\] \[CaO(s)+C{{O}_{2}}(g)\rightleftharpoons CaC{{O}_{3}}(s)\]
B) \[CaO(s)+C{{O}_{2}}(g)\rightleftharpoons CaC{{O}_{3}}(s)\] \[K{{O}_{2}}\]
C) \[Si{{O}_{2}}\]
D) \[Ti{{O}_{2}}\] \[Ba{{O}_{2}}\]
Correct Answer: C
Solution :
Cell which convert chemical energy of a fuel directly into electrical energy is called fuel cell. May be \[Sn/HCl\] fuel cell, also called Bacon cell. The net reaction taking place in a Bacon cell is \[{{H}_{2}}/Pd-C\] Other fuel cells are Propane oxygen fuel cell \[Zn/NaOH\] Methane oxygen fuel cell \[Zn/N{{H}_{4}}Cl\] Methanol oxygen fuel cell \[{{H}_{2}}O/{{H}_{2}}S{{O}_{4}}\] Note: Efficiency of fuel cells is 70-75% which is much higher than conventional cells (40% only),
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