Calculate the percent dissociation of butanoic acid (C3H2CO2H) in a 1.4 mM aqueous solution of the stuff.

The percent dissociation of butanoic acid is 9.8%

Explanation:

 cM                                                0             0

So dissociation constant will be:

Give c= 1.4 mM = and = dissociation constant  

Putting in the values we get:

Thus percent dissociation of butanoic acid is 9.8%

  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-