Isobutane (C4H10) is one of the components of natural gas. Which equation shows the balanced combustion reaction for isobutane?

A. C4H10 +6.502 + 4CO2 + 5H20 + heat

B. C4H10 + O2 + 4C02 + H2O + heat

C. C4H10 + O2 + 4CO2 + 5H20 + heat

D. C4H10 + 02 → CO2 + H2O + heat

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-