2hf(g)< > h2(g)+f2(g)
consider the reaction.
at equilibrium at 600 k, the concentrations are as follows.[hf] = 5.82 x 10^-2 m[h2] = 8.4 x 10^-3 m[f2] = 8.4 x 10^-3 mwhat is the value of keq for the reaction expressed in scientific notation? a. 2.1 x 10^-2b. 2.1 x 10^2c. 1.2 x 10^3d. 1.2 x 10^-3

Answer : The value of for the following reaction will be,

Explanation :

is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The given balanced equilibrium reaction is,

As we know that the concentrations of pure solids are constant that means they do not change. Thus, they are not included in the equilibrium expression.

The expression for equilibrium constant for this reaction will be,

Now put all the given values in this expression, we get :

Therefore, the value of for the following reaction will be,

  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-